| A100 | You've exceeded the limit for your app on the allowed number of a model component. |
| A100 | The number of SINGLE_INSTANCE fields where the target is a Workday-delivered business object exceeds the limit of 25 for your app. |
| B100 | The number of fields exceeds the limit of 50 for your business object. |
| B101 | The number of derived fields exceeds the limit of 40 for your business object. |
| B102 | The number of SINGLE_INSTANCE fields exceeds the limit of 10 for your business object. |
| B110 | A field can't have the same name as its attachment or business object. |
| B111 | A field can't have the same label as its attachment or business object. |
| B200 | You can only define useForDisplay on 1 TEXT or SINGLE_INSTANCE field in a business object. |
| B201 | You can only define isReferenceId on 1 TEXT field in a business object. |
| B202 | The concatenation of the Reference ID of your app with the name of a business object or attachment can't exceed 124 characters. |
| B203 | You can only define secureByTarget on 1 SINGLE_INSTANCE field in a business object. |
| B300 | You've used an invalid target business object or attachment on a SINGLE_INSTANCE field in this business object or attachment. |
| D100 | The concatenation of the name of a business object or attachment with a field ID must be unique in an app. |
| D101 | Business objects and attachments in an app can't use each other as targets when both SINGLE_INSTANCE fields have useForDisplay set to true. |
| E100 | The name or label of a business object or attachment concatenated with the word 'event' can't be the same as the name or label of a business process event in the same app. |
| E100 | Duplicate field id, name, or label. |
| E100 | Duplicate id, name, or label of a business object or attachment. |
| E100 | Duplicate id, name, or label of a defaultCollection. |
| E100 | Duplicate id, name, or label of an action step in a business process. |
| E100 | Duplicate id, name, or label of a security domain. |
| E100 | Duplicate column id, name, or order on a report. |
| E100 | Duplicate sortConfigs id or order in a report. |
| E100 | You can't use the same field in more than 1 column on a report. |
| E101 | The id must be an integer greater than zero and less than 32768. |
| E102 | Name should start with lowercase letter or number, and supports only alphanumeric, space, hyphen, and colon characters. |
| E102 | Name should start with uppercase letter or number, and supports only alphanumeric, space, hyphen, and colon characters. |
| E103 | Label should start with uppercase letter or number, and supports only alphanumeric, space, hyphen, and colon characters. |
| E104 | Description can't be more than 500 characters in length. |
| E104 | Expression can't be more than 1000 characters in length. |
| E104 | Name can't be more than 100 characters in length. |
| E105 | Specify a valid page route for the: - Action steps.
- Approval step.
- Details page.
- Revise page.
in a business process. |
| E200 | You've specified an invalid default security domain on the business object or attachment. |
| E200 | You've specified an invalid security domain on a field in the business object or attachment. |
| E300 | Specify at least 1 default security domain. |
| F100 | Invalid SINGLE_INSTANCE field name using a reserved field name. See Reference: Reserved Field Names on Business Objects for a list of reserved field names. |
| F101 | Invalid field name using a reserved field name. See Reference: Reserved Field Names on Business Objects for a list of reserved field names. |
| F102 | Invalid field name using a reserved field name. Use a supported field name to prevent unexpected app behavior. See Reference: Reserved Field Names on Business Objects for a list of reserved field names. |
| F300 | Workday Extend doesn't support "secureByTarget": true on SINGLE_INSTANCE fields that reference these target attributes. |
| F400 | Invalid expression used in a derived field in a business object or attachment. An expression must have a valid value for derived fields. See Reference: Derived Fields for a list of valid expressions. |
| P100 | An attachment can't be the targetBusinessObject in a business process. |
| P101 | Invalid targetBusinessObject in a business process. |
| P200 | The number of action steps exceeds the limit of 5 for a business process. |
| P300 | The approval step of a business process must include either the APPROVE or DO_NOT_APPROVE action. |
| P400 | The SEND_BACK action on the approval step of a business process requires you to specify a revisePageRoute. |
| P400 | You've specified a revisePageRoute on a business process without also specifying a SEND_BACK action on the approval step of the business process. |
| R100 | You've specified an invalid field in the sortConfigs of the report. |
| R101 | You've specified an invalid field in a column of the report. |
| R102 | You can't specify a field on a report column where you set isSelfReferencing to true. |
| R200 | You can't set isSelfReferencing to true on more than 1 column on a report. |
| R201 | You've specified an invalid business object or attachment on the report. |
| S101 | A security domain that you enabled for page security can't have the same name as a business object or attachment. |
| S102 | A security domain that you enabled for page security can't have the same name as the defaultCollection of a business object. |
| T101 | You've specified an invalid business object or attachment on the task. |
| T102 | You can't add the secured attribute to a task without also specifying a business object or attachment on the task definition. |