Validation
All data sent to the API will passed through three layers of validation: schema, logical and data integrity.
Schema Validation
Each data object has a schema file that represents its required shape and some basic validation rules. Data must conform to the schema definition; even if you are using JSON.
The latest schema pack can be downloaded from here.
Logical Validation
Logical validation rules ensure that data is not contradictory to itself; for example an employee leaving date cannot be before their start date. The full list of logical validation rules and their meaning are detailed in the table below.
| Rule | Data Type | Description |
|---|---|---|
| LOG1000 | Employee | Cannot apply employee data. Employee leaving date cannot be before start date. |
| LOG1001 | Employee | Cannot apply employee data. Employee leaver reason and leaving date must be set as a pair. You cannot set one without the other. |
| LOG1002 | Address | Cannot apply employee data. Non UK address cannot have postcode. |
| LOG1003 | Address | Cannot apply employee data. UK address must include a postcode. |
| LOG1004 | Employee | Cannot apply employee data. Directorship appointment date cannot be before employment start date |
| LOG1005 | Employee | Cannot apply employee data. Starter declaration not set. Employees with starting date greater than or equal to the current tax year start date must include a starter declaration value. |
| LOG1006 | Employee | Cannot apply employee data. Employee region cannot be set to Wales before the start of [2019/20] tax year. Revision effective date must be [2019-04-06] or greater. |
| LOG1100 | Employer | Cannot apply employer data. The auto enrolment postponement date must be within 3 calendar months of the auto enrolment staging date. |
| LOG1101 | Employer | Cannot apply employer data. The auto enrolment postponement date cannot be before the auto enrolment staging date. |
| LOG1102 | Employer | Cannot apply employer data. Auto re-enrolment dates must be between 3 months before and 3 months after the tri-annual anniversary of the staging date. |
| LOG1400 | PayInstruction | Cannot apply pay instruction data. Pay instruction end date cannot be before the start date. |
| LOG1401 | AbsencePayInstruction | Cannot apply absence pay instruction data. Absence pay instruction end date cannot be before the start date. |
| LOG1402 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The employee contribution cannot exceed £5000. |
| LOG1403 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [CashEquivalent] property should not be set as it is calculated value for payrolled car benefit in kind. |
| LOG1404 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [BenefitEndDate] must be greater than or equal to the start date of the instruction. |
| LOG1405 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [FuelWithdrawn] date cannot be provided if [FuelProvidedFrom] date is not set. |
| LOG1406 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [FuelWithdrawn] date must be greater than the [FuelProvidedFrom] date. |
| LOG1407 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [FuelReinstated] date cannot be provided if [FuelWithdrawn] date is not set. |
| LOG1408 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction data. The [FuelReinstated] date must be greater than the [FuelWithdrawn] date. |
| LOG1409 | CarBenefitYtdPayInstruction | Cannot apply car benefit YTD pay instruction data. The [Value] property must equal zero. |
| LOG1410 | CarBenefitYtdPayInstruction | Cannot apply car benefit YTD pay instruction data. The [TaxableAmount] property must be equal to the sum total of [TaxableVehicle] and [TaxableFuel]. |
| LOG1411 | BenefitPayInstruction | Cannot apply benefit pay instruction data. The instruction [EndDate] must be greater than or equal to the [BenefitEndDate]. |
| LOG1412 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction. The fuel type value is invalid for the tax year [2018/19] |
| LOG1413 | CarBenefitPayInstruction | Cannot apply car benefit pay instruction. The fuel type value is invalid for the tax year [2019/20] |
| LOG1414 | AbsenceYtdPayInstruciton | Cannot apply YTD absence pay instruction data. Absence pay instruction end date cannot be before the start date. |
| LOG2300 | TaxPayInstruction | Cannot apply Tax pay instruction data. The Welsh tax code prefix 'C' cannot be used before [2019-04-06]. |
| LOG2800 | SapPayInstruction | Cannot apply SAP pay instruction data. The matching date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG2801 | SapPayInstruction | Cannot apply SAP pay instruction data. The placement date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG2802 | SapPayInstruction | Cannot apply SAP pay instruction data. The duration of the absence must be in complete weeks only. Partial weeks are not allowed. |
| LOG2803 | SapPayInstruction | Cannot apply SAP pay instruction data. The duration of the absence must be greater than or equal to 7 days. |
| LOG2804 | SapPayInstruction | Cannot apply SAP pay instruction data. SAP absence must have an absence end date. |
| LOG2805 | SapPayInstruction | Cannot apply SAP pay instruction data. Keep in touch day is out bounds. Keep in touch days must fall within the absence start and end dates. |
| LOG2806 | SapPayInstruction | Cannot apply SAP pay instruction data. Absence start date is out of bounds. SAP cannot be paid until 2 weeks before the placement date. |
| LOG2807 | SapPayInstruction | Cannot apply SAP pay instruction data. Absence start date is out of bounds. SAP must start no later than the day after placement. |
| LOG2900 | SmpPayInstruction | Cannot apply SMP pay instruction data. SMP absence must have an end date. The maximum duration of paid statutory maternity leave is 39 weeks. |
| LOG2901 | SmpPayInstruction | Cannot apply SMP pay instruction data. The specified baby due date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG2902 | SmpPayInstruction | Cannot apply SMP pay instruction data. Keep in touch day is out bounds. Keep in touch days must fall within the absence start and end dates. |
| LOG2903 | SmpPayInstruction | Cannot apply SMP pay instruction data. Absence start date is not valid. Earliest maternity start date is 11 weeks before baby due date. |
| LOG3000 | SppPayInstruction | Cannot apply SPP pay instruction data. The baby due date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG3001 | SppPayInstruction | Cannot apply SPP pay instruction data. The duration of the absence must be greater than or equal to 7 days. |
| LOG3002 | SppPayInstruction | Cannot apply SPP pay instruction data. The duration of the absence exceeds the statutory maximum allowed. |
| LOG3003 | SppPayInstruction | Cannot apply SPP pay instruction data. The duration of the absence must be a complete week. Partial weeks are not allowed. |
| LOG3004 | SppPayInstruction | Cannot apply SPP pay instruction data. SPP absence must have an absence end date. |
| LOG3005 | SppPayInstruction | Cannot apply SPP pay instruction data. Working days must fall within the absence start and absence end dates. |
| LOG3006 | SppPayInstruction | Cannot apply SPP pay instruction data. The baby born date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG3007 | SppPayInstruction | Cannot apply SPP pay instruction data. The absence start date cannot be before the baby born date. |
| LOG3100 | ShppPayInstruction | Cannot apply ShPP pay instruction data. The baby due date is out of acceptable range. |
| LOG3101 | ShppPayInstruction | Cannot apply ShPP pay instruction data. The duration of the absence must be greater than or equal to 7 days. |
| LOG3102 | ShppPayInstruction | Cannot apply ShPP pay instruction data. The duration of the absence must be a complete week. Partial weeks are not allowed. |
| LOG3103 | ShppPayInstruction | Cannot apply ShPP pay instruction data. ShPP absence must have an absence end date. |
| LOG3104 | ShppPayInstruction | Cannot apply ShPP pay instruction data. The baby born date is out of acceptable range of [2015-01-01 to 2100-01-01]. |
| LOG3105 | ShppPayInstruction | Cannot apply ShPP pay instruction data. The absence start date cannot be before the baby born date. |
| LOG3106 | ShppPayInstruction | Cannot apply ShPP pay instruction data. Either both or neither start and end Shared Parental Leave (SPL) dates must be specified. |
| LOG3107 | ShppPayInstruction | Cannot apply ShPP pay instruction data. Shared Parental Leave (SPL) end date cannot be before SPL start date. |
| LOG3108 | ShppPayInstruction | Cannot apply ShPP pay instruction data. Absence must end before child's first anniversary. |
| LOG3200 | Pension | Cannot apply pension pay instruction data. Employee contribution invalid. You cannot supply both cash and percentage contributions. |
| LOG3201 | Pension | Cannot apply pension pay instruction data. Employer contribution invalid. You cannot supply both cash and percentage contributions. |
| LOG3202 | Pension | Cannot apply pension pay instruction data. Employee additional voluntary contribution value is invalid. You cannot supply both cash and percentage additional voluntary contributions. |
| LOG3400 | Pension | Cannot apply pension data. No employee contribution value is specified. You must supply either cash or percentage employee contribution value. |
| LOG3401 | Pension | Cannot apply pension data. No employer contribution value is specified. You must supply either cash or percentage employer contribution value. |
| LOG3402 | Pension | Cannot apply pension data. Employee contribution invalid. Employees can contribute either cash or percentage, but not both. |
| LOG3403 | Pension | Cannot apply pension data. Employer contribution invalid. Employers can contribute either cash or percentage, but not both. |
| LOG3404 | Pension | Cannot apply pension data. The taxation method has not been set. Please update the taxation method and try again. |
| LOG3405 | Pension | Cannot apply pension data. No pensionable payment codes have been specified. Please include as least one pensionable payment code and try again. |
| LOG3406 | Pension | Cannot apply pension data. Unknown pay code specified. |
| LOG3500 | ReportDefinition | Cannot apply report definition data. The readonly flag is reserved for system generated reports. |
| LOG3550 | TransformDefinition | Cannot apply transform definition data. The readonly flag is reserved for system generated transforms. |
| LOG3800 | AoePayInstruction | Cannot apply AOE pay instruction data. The stop date cannot be before the issue date. |
| LOG3801 | AoePayInstruction | Cannot apply AOE pay instruction data. The deduction amount and deduction percentage properties are mutually exclusive. You cannot set both values. |
| LOG3802 | AoePayInstruction | Cannot apply AOE pay instruction data. The protected earnings amount and protected earnings percentage properties are mutually exclusive. You cannot set both values. |
| LOG4000 | RtiJobInstruction | Employer missing required RTI information. HmrcSettings are missing or incomplete. |
| LOG4001 | RtiJobInstruction | Cannot enqueue RTI job instruction. Unable to transmit, no RTI transaction link has been specified. |
| LOG4500 | SubContractor | Cannot apply sub contractor data. Missing sole trader details. |
| LOG4501 | SubContractor | Cannot apply sub contractor data. Unexpected sole trader details specified. |
| LOG4502 | SubContractor | Cannot apply sub contractor data. Unexpected company details specified. |
| LOG4503 | SubContractor | Cannot apply sub contractor data. Missing partnership details. |
| LOG4504 | SubContractor | Cannot apply sub contractor data. Unexpected partnership details specified. |
| LOG4505 | SubContractor | Cannot apply sub contractor data. Unexpected trust details specified. |
| LOG4506 | SubContractor | Cannot apply sub contractor data. Missing verification number. Cannot set taxation type without specifying a valid verification number. |
| LOG4507 | SubContractor | Cannot apply sub contractor data. Missing verification date. Cannot set taxation type without specifying a valid verification date. |
| LOG4508 | SubContractor | Cannot apply sub contractor data. Company must have a trading name. |
| LOG4620 | CisInstruction | Cannot insert CIS instruction. Tax period is outside expected boundaries. |
| LOG4621 | CisInstruction | Cannot insert CIS instruction. Unit of measure, units and rate must be specified as a set. You cannot specify one without the others. |
| LOG4622 | CisInstruction | Cannot insert CIS instruction. Tax year end and period end must be set as a pair. You cannot specify one without the other. |
| LOG4623 | CisInstruction | Cannot insert CIS instruction. The ending period cannot be before the starting period. |
| LOG4700 | HolidayScheme | Cannot apply holiday scheme. Holiday scheme ceased date cannot be before initial effective date. |
| LOG4701 | HolidayScheme | Cannot apply holiday scheme. Scheme year start month and day do not represent a valid date. |
| LOG4800 | PostGraduateLoanPayInstruction | Cannot apply Post Graduate Loan pay instruction. The start date cannot be before [2019-04-06] when they were introduced. |
| LOG4900 | PostGraduateLoanYtdPayInstruction | Cannot apply Post Graduate Loan YTD pay instruction. The start date cannot be before [2019-04-06] when they were introduced. |
Data Integrity Validation
Data integrity rules ensure submitted data does not invalidate any existing data; for example historic changes to an employee’s salary cannot contradict any existing pay runs. The full list of data integrity rules and their meaning are detailed in the table below.
| Rule | Data Type | Description |
|---|---|---|
| DIR1000 | Employee | Cannot delete employee with calculation history. |
| DIR1001 | Employee | Cannot insert employee revision before existing revision. Revision dates must run sequentially. |
| DIR1002 | Employee | Cannot delete employee revision with dependent calculation. |
| DIR1003 | Employee | Cannot delete employee revision. There must be at least one revision. |
| DIR1004 | Employee | Cannot replace employee revision that has dependent calculation. |
| DIR1005 | Employee | Cannot delete historical employee revision. Revisions must be deleted in descending sequence. |
| DIR1006 | Employee | Cannot update employee revision. Revisions cannot be edited. |
| DIR1007 | Employee | Cannot add employee to another employers pay schedule. The specified pay schedule belongs to another employer. |
| DIR1008 | Employee | Cannot insert employee revision. Employee code must be unique within the employer and have not been used before. |
| DIR1009 | Employee | Cannot alter employee revision. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR1010 | Employee | Cannot alter employee core. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR1011 | Employee | Cannot apply employee revision. The leaving date is before most recent pay run. Setting this leaving date will invalidate the pay run calculations. Delete pay run and try again |
| DIR1012 | Employee | Cannot apply employee revision. The leaving date conflicts with an existing statutory parental absence. The leaving date cannot be before the absence end date unless the absence is fully paid. |
| DIR1100 | Employer | Cannot delete employer with pay run history. |
| DIR1101 | Employer | Cannot insert employer revision before existing revision. Revision dates must run sequentially. |
| DIR1102 | Employer | Cannot delete employer revision with dependent calculation. |
| DIR1103 | Employer | Cannot delete employer revision. There must be at least one revision. |
| DIR1104 | Employer | Cannot replace employer revision that has dependent calculation. |
| DIR1105 | Employer | Cannot delete historical employer revision. Revisions must be deleted in descending sequence. |
| DIR1106 | Employer | Cannot update employer revision. Revisions cannot be edited. |
| DIR1107 | Employer | Cannot alter employer revision. The employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR1108 | Employer | Cannot alter employer core. The employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR1109 | Employer | Cannot update employer. The specified auto enrolment pension belongs to a different employer. |
| DIR1110 | Employer | Cannot delete employer. RTI has been successfully transmitted to HMRC for this employer. |
| DIR1200 | PayRun | Cannot delete pay run out of sequence. The pay run has descendant(s). Only tail end pay runs can be deleted. |
| DIR1201 | PayRun | Cannot insert pay run. The pay run payment date cannot be before the previous pay run payment date. Expected payment date to be after {0:yyyy-MM-dd} but found {1:yyyy-MM-dd} |
| DIR1202 | PayRun | Cannot insert pay run. Incorrect tax period specified. Supplementary pay runs must share the proceeding pay runs tax period. Expected tax period ({0}) but found tax period ({1}) |
| DIR1203 | PayRun | Cannot insert pay run. Supplementary pay runs must specify a proceeding pay run. |
| DIR1204 | PayRun | Cannot insert pay run. Incorrect period date(s) specified. Re-run period dates must match proceeding period dates. Expected {0:yyyy-MM-dd} to {1:yyyy-MM-dd} but found {2:yyyy-MM-dd} to {3:yyyy-MM-dd}. |
| DIR1205 | PayRun | Cannot insert pay run. Incorrect period start date specified. Pay run start date must directly follow the proceeding pay run end date. Expected start date {0:yyyy-MM-dd} but found {1:yyyy-MM-dd} |
| DIR1206 | PayRun | Cannot insert pay run. All employees must be members of the specified pay schedule. |
| DIR1207 | PayRun | Cannot insert pay run. The specified duration does not match the pay schedule frequency. The duration between period start and period end must correspond to the pay schedule payment frequency. |
| DIR1208 | PayRun | Cannot insert pay run. The pay run payment date cannot be before the first employer revision date. |
| DIR1209 | PayRun | Cannot update pay run. The specified pay run has dependent runs and cannot be altered. Remove dependent runs and try again. |
| DIR1210 | PayRun | Cannot insert pay run. Pensions marked as AE Compatible must meet the minimum contribution percentage. |
| DIR1211 | PayRun | Cannot insert pay run. Pensions marked as AE Compatible must meet the minimum employer contribution percentage. |
| DIR1212 | PayRun | Cannot insert pay run. The payment date is after the maximum supported tax year. |
| DIR1213 | PayRun | Cannot insert pay run. The payment date is before the minimum supported tax year. |
| DIR1400 | PayInstruction | Cannot delete pay instruction. The pay instruction has dependent pay lines. |
| DIR1401 | PayInstruction | Cannot update pay instruction. The instruction end date cannot be before a dependent pay line payment date (or period end date if lower). |
| DIR1402 | PayInstruction | Cannot insert statutory absence instruction. The absence duration overlaps an existing statutory absence instruction. Only a single statutory absence can be active at any one time. |
| DIR1403 | PayInstruction | Cannot insert parental statutory absence instruction. The period of absence conflicts with previously paid salary. |
| DIR1404 | PayInstruction | Cannot insert pay instruction. A pay instruction exists for the given dates. [SingleInstance] pay instructions cannot overlap, either update or end the existing instruction. |
| DIR1405 | PayInstruction | Cannot insert NI instruction. Unable to set directorship calculation method because the employee directorship appointment date has not been set or is after the instruction start date. |
| DIR1406 | PayInstruction | Cannot update pay instruction. The instruction has dependent calculations. Suggestions: end existing instruction and start new instance; delete blocking pay run(s), amend and re-run. |
| DIR1407 | PayInstruction | Cannot alter pay instruction. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR1408 | PayInstruction | Cannot insert Pay Instruction. The instruction start date cannot be before the earliest employee revision date |
| DIR1409 | PayInstruction | Cannot apply pay instruction. The specified pay code does not exist for the given start date. |
| DIR2600 | PayCode | Cannot delete pay code with calculation history. |
| DIR2601 | PayCode | Cannot insert pay code revision before existing revision. Revision dates must run sequentially. |
| DIR2602 | PayCode | Cannot delete pay code revision with dependent calculation. |
| DIR2603 | PayCode | Cannot delete pay code revision. There must be at least one revision. |
| DIR2604 | PayCode | Cannot replace pay code revision that has dependent calculation. |
| DIR2605 | PayCode | Cannot delete historical pay code revision. Revisions must be deleted in descending sequence. |
| DIR2606 | PayCode | Cannot update pay code revision. Revisions cannot be edited. |
| DIR2607 | PayCode | Cannot insert read only pay code. Read only is reserved for system pay codes. |
| DIR2608 | PayCode | Cannot edit read only pay code. Only nominal code and description can be altered on read only system codes. |
| DIR2609 | PayCode | Cannot delete read only pay code. Read only system codes cannot be deleted. |
| DIR2610 | PayCode | Cannot edit pay code 'CODE'. The 'Code' property cannot be changed. |
| DIR2611 | PayCode | Cannot alter pay code revision. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR2612 | PayCode | Cannot alter pay code core. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR2700 | SspPayInstruction | Cannot insert SSP instruction. An open ended instruction already exists, either update or end the existing instruction. |
| DIR2701 | SspPayInstruction | Cannot insert SSP instruction. An existing SSP absence has overlapping dates. |
| DIR2702 | SspPayInstruction | Cannot insert SSP instruction. Absence start data cannot be before the earliest employee revision. |
| DIR2800 | SapPayInstruction | Cannot insert SAP instruction. No effective employee core found for the specified matching data. |
| DIR2801 | SapPayInstruction | Cannot insert SAP instruction. The minimum length of employment has not been met. |
| DIR2802 | SapPayInstruction | Cannot insert SAP instruction. Employment ended before the start of the matching week. |
| DIR2803 | SapPayInstruction | Cannot insert SAP instruction. Absence start data cannot be before the earliest employee revision. |
| DIR2900 | SmpPayInstruction | Cannot insert SMP instruction. SMP is only allowed for female employees. |
| DIR2901 | SmpPayInstruction | Cannot insert SMP instruction. The minimum length of employment has not been met. Employment must have began {0} weeks before expected week of childbirth. |
| DIR2902 | SmpPayInstruction | Cannot insert SMP instruction. Employment ended before baby due qualifying week began. |
| DIR2903 | SmpPayInstruction | Cannot insert SMP instruction. No employee information exists for the specified absence start data. |
| DIR2904 | SmpPayInstruction | Cannot insert SMP instruction. No employee core exists for qualifying week and no AWE override value has been supplied. |
| DIR2905 | SmpPayInstruction | Cannot insert SMP instruction. Absence start data cannot be before the earliest employee revision. |
| DIR3000 | SppPayInstruction | Cannot insert SPP instruction. The minimum length of employment has not been met. |
| DIR3001 | SppPayInstruction | Cannot insert SPP instruction. Absence start data cannot be before the earliest employee revision |
| DIR3100 | ShppPayInstruction | Cannot insert SHPP instruction. The minimum length of employment has not been met. |
| DIR3101 | ShppPayInstruction | Cannot insert SHPP instruction. (Non-Agency Workers) The absence start date cannot be before the Share Parental Leave (SPL) start date. |
| DIR3102 | ShppPayInstruction | Cannot insert SHPP instruction. (Non-Agency Workers) The absence must start at least 6 days before Share Parental Leave (SPL) end date. |
| DIR3103 | ShppPayInstruction | Cannot insert SHPP instruction. Share Parental Leave (SPL) start and end dates must be specified for non-agency workers. |
| DIR3104 | ShppPayInstruction | Cannot insert SHPP instruction. (Non-Agency Workers) Absence must end on or before Share Parental Leave (SPL) end date. |
| DIR3105 | ShppPayInstruction | Cannot insert SHPP instruction. Absence start data cannot be before the earliest employee revision. |
| DIR3400 | Pension | Cannot delete pension with pay run history. |
| DIR3401 | Pension | Cannot insert pension revision before existing revision. Revision dates must run sequentially. |
| DIR3402 | Pension | Cannot delete pension revision with dependent calculation. |
| DIR3403 | Pension | Cannot delete pension revision. There must be at least one revision. |
| DIR3404 | Pension | Cannot replace pension revision that has dependent calculation. |
| DIR3405 | Pension | Cannot delete historical pension revision. Revisions must be deleted in descending sequence. |
| DIR3406 | Pension | Cannot update pension revision. Revisions cannot be edited. |
| DIR3407 | Pension | Cannot alter pension revision. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR3408 | Pension | Cannot alter pension core. The parent employer is marked as readonly. Please wait for all calculations to complete and try again. |
| DIR3409 | Pension | Cannot insert pension revision. Pensions marked as AE Compatible must meet the minimum contribution percentage. |
| DIR3410 | Pension | Cannot insert pension revision. Pensions marked as AE Compatible must meet the minimum employer contribution percentage. |
| DIR3500 | ReportDefinition | Cannot delete report definition. System generated reports cannot be deleted. |
| DIR3550 | TransformDefinition | Cannot delete transform definition. System generated transforms cannot be deleted. |
| DIR3600 | DpsMessage | Cannot update DPS message. Only the [MessageStatus] and [ProcessingResult] properties can be updated, all other properties are readonly. |
| DIR3700 | AEAssessment | Cannot delete auto enrolment assessment. Pay run generated assessments cannot be deleted. |
| DIR3701 | AEAssessment | Cannot update auto enrolment assessment. Pay run generated assessments cannot be updated. |
| DIR3800 | AoePayInstruction | Cannot insert AOE pay instruction. Specified protected earnings is not valid. The selected attachment type does not allow protected earnings. |
| DIR3801 | AoePayInstruction | Cannot insert AOE pay instruction. Specified protected earnings is not valid. The selected attachment type defines a fixed earning protection level. |
| DIR3802 | AoePayInstruction | Cannot insert AOE pay instruction. Specified deduction percentage is not valid. The selected attachment type does not allow deduction by percentage. |
| DIR3803 | AoePayInstruction | Cannot insert AOE pay instruction. Specified deduction amount is not valid. The selected attachment type does not allow deduction by amount. |
| DIR3804 | AoePayInstruction | Cannot insert AOE pay instruction. Conflicting attachment instruction already exists. The selected attachment type does not allow multiple simultaneous instances. |
| DIR3805 | AoePayInstruction | Cannot insert AOE pay instruction. Instruction dates overlap an existing instruction for the specified case number. |
| DIR3900 | NominalCode | Cannot delete nominal code. Specified nominal code has dependent pay codes. |
| DIR4100 | RtiTransaction | Cannot delete RTI Transaction. Information has been transmitted to HMRC. Create a correction or negation submission. |
| DIR4101 | RtiTransaction | Cannot insert RTI Transaction. A transaction of the same RTI type with the same timestamp already exists. Timestamp must be unique. |
| DIR4200 | PaySchedule | Cannot apply pay schedule change; name is already in use. Pay schedule names must be unique within the employer scope. |
| DIR4201 | PaySchedule | Cannot delete pay schedule. The pay schedule has attached employee(s). |
| DIR4300 | PensionPayInstruction | Cannot insert pension pay Instruction. The pay Instruction start date cannot be before the earliest pension revision date. |
| DIR4500 | SubContractor | Cannot delete sub contractor with calculation history. |
| DIR4501 | SubContractor | Cannot insert sub contractor revision before existing revision. Revision dates must run sequentially. |
| DIR4502 | SubContractor | Cannot delete sub contractor revision with dependent calculation. |
| DIR4503 | SubContractor | Cannot delete sub contractor revision. There must be at least one revision. |
| DIR4504 | SubContractor | Cannot replace sub contractor revision that has dependent calculation. |
| DIR4505 | SubContractor | Cannot delete historical sub contractor revision. Revisions must be deleted in descending sequence. |
| DIR4506 | SubContractor | Cannot update sub contractor revision. Revisions cannot be edited. |
| DIR4620 | CisInstruction | Cannot delete CIS instruction. The instruction has dependent calculations. |
| DIR4621 | CisInstruction | Cannot update CIS instruction. The alteration would invalidate dependent calculations. |
| DIR4622 | CisInstruction | Cannot alter CIS instruction. The specified CIS line type does not exist. |
| DIR4640 | CisLineType | Cannot delete CIS line type. The line type has dependent CIS instructions. |
| DIR4641 | CisLineType | Cannot alter CIS line type. The line type has dependent CIS calculations. |
| DIR4642 | CisLineType | Cannot apply CIS line type. The line type name and unique key must match. |
| DIR4700 | HolidayScheme | Cannot delete holiday scheme with calculation history. |
| DIR4701 | HolidayScheme | Cannot insert holiday scheme revision before existing revision. Revision dates must run sequentially. |
| DIR4702 | HolidayScheme | Cannot delete holiday scheme revision with dependent calculation. |
| DIR4703 | HolidayScheme | Cannot delete holiday scheme revision. There must be at least one revision. |
| DIR4704 | HolidayScheme | Cannot replace holiday scheme revision that has dependent calculation. |
| DIR4705 | HolidayScheme | Cannot delete historical holiday scheme revision. Revisions must be deleted in descending sequence. |
| DIR4706 | HolidayScheme | Cannot update holiday scheme revision. Revisions cannot be edited. |
| DIR4707 | HolidayScheme | Cannot insert holiday scheme revision. Existing holiday scheme key cannot be changed. |
| DIR4720 | HolidaySchemePayInstruction | Cannot apply holiday reclaim pay instruction. Holiday leave period overlaps an existing holiday period. |