You can pass a screen field or error flag as an argument to an error routine by prefixing the name of the field or flag with the screen name and a hyphen.
You can interrogate the following AMB-generated flags and data fields to determine input data errors.
You can use the following AMB-generated fields to code your application edit routines. The column Before / After indicates whether the routine executes before or after the name and format. The field edits determine which field to reference.
| Input/ Output | Before/After | Field Name | Description |
|---|---|---|---|
| Input | After | Screenname-fieldname. | Internal picture was updated by any previous field edits. |
| Input | Before | Screenname-fieldname-INPT. | Data field containing any invalid data entered by the end user. Edits have not been performed; data is in screen input format. Field length is field length painted on the screen; definition is PIC X. |
| Output | After | Screenname-fieldname-EDIT. | Data was moved to -EDIT by previous output edits. Data may contain special symbols. Default length is field length painted on the screen; definition is PIC X. |
| Output | Before | Screenname-fieldname. | Data was not processed by previous output edits and is still in the internal format. Data in this field moves to the -EDIT field when an output format is specified. Default length is field length painted on the screen; definition is PIC X. |
| Either | Either | (APS-ROW-SUB) | This data field contains the row number being processed for fields in a repeated block, or in a list box or combination box. |
| Either | Either | APS-EDIT-MESSAGE | Data field that lets you display an error message in addition to any you defined in the field edits for the field. Move a literal or data name containing the text into this field. |
| Either | Either | Screenname-fieldname-LEN | For CICS only. Contains the length of the field; definition is PIC X. |
| Either | Either | Screenname-fieldname-ATTR | For CICS only. Contains the attribute values assigned to the field; definition is PIC X. |
AppMaster Builder processes input data from the screenname-fieldname-INPT field. After the data passes the input edits, the data moves to screenname-fieldname and takes on the characteristics of the internal picture. For output, the data moves to the screenname-fieldname-EDIT field and takes on the characteristics of the output format specifications.
Application edit routines execute for a field whether the data passes or fails field edits, unless you set various switches in the APFEIN control file. To indicate an error in an application edit routine, move T to screenname-fieldname-FLAG. This tells AMB to execute error processing; you can display an additional error message from the APS-EDIT-MESSAGE field.