3588184 - Migration Cockpit error "Value * of field * is not valid" for custom field

In the Migration Cockpit, when simulating the Migration Object in which a custom field was added through key user extensibility, errors are thrown:

• Messages for Source Record: *, DMC_RT_MSG188 (Note: record with the key user extensibility field filled)
• Value * of field * is not valid., CFD_APPL_RUNTIME4 (Note: the error mentions the value added in the custom field)

SAP S/4HANA Cloud Public Edition.

The expected data length of the custom field wasn't followed.

In the XML template file of the Migration Object, this can be checked in the sheet "Field List", column "Length".

If the data to be used in the field has smaller length than the one expected in the field, leading zeros can be added to field.

For instance: for the custom field Z_CUSTOM_FIELD1, the expected length is 5, but the value "123" is being filled in the template file (and throwing errors). In such case, the value "00123" should be used.

• 2692715 - Migration Cockpit: How to correctly fill data into XML template

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