How To Fix DT204 - Reference field &-& for &-& has incorrect type

DT204 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 204

• Message text: Reference field &-& for &-& has incorrect type

What causes this issue?

The reference field of the specified field does not have the correct
format:
A currency reference field must have format CUKY, i.e. a field of
format CURR must have a reference field of format CUKY.
A quantity reference field must have format UNIT, i.e. a field of
format QUAN must have a reference field of format UNIT.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Assign a reference field with the correct format to the field.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT204 - Reference field &-& for &-& has incorrect type ?

  The SAP error message DT204 indicates that there is a type mismatch for a reference field in your data. This typically occurs when the data type of a field does not match the expected type defined in the data dictionary or the structure of the database table.
  
  Cause:
  
  Data Type Mismatch: The field in question is expected to be of a certain data type (e.g., CHAR, NUMC, DATS, etc.), but the data being passed to it does not conform to that type.
  Incorrect Field Mapping: If you are using a custom program or a data transfer process (like LSMW, BAPIs, or IDocs), the mapping of fields may be incorrect.
  Inconsistent Data: The data being processed may contain unexpected values that do not match the expected format or type.
  Changes in Data Dictionary: If there have been recent changes to the data dictionary (like changes in field types), it may lead to this error if the