How To Fix DT904 - &-structure: invalid change: decimal places of field & changed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 904

• Message text: &-structure: invalid change: decimal places of field & changed

What causes this issue?

For a BAPI or IDOC structure, you have attempted to change decimal
places. This structure, however, is marked as "frozen". This means that,
in this version, it is delivered productive in BAPIs and IDOCs,
respectively. Renewed delivery with the performed change would
contradict the agreed interface.

System Response

The activation is rejected.

How to fix this error?

Take back the change. If it is absolutely necessary, you will have to
remove the "frozen" status. For information on how to do this and what
you need to watch out for, refer to Note 1297242.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT904 - &-structure: invalid change: decimal places of field & changed ?

  The SAP error message DT904, which states "Structure: invalid change: decimal places of field & changed," typically occurs when there is an attempt to modify the decimal places of a field in a structure that is already in use. This can happen during the development of data dictionary objects, such as when you are trying to change the definition of a data element or a structure that is already being referenced in various programs or database tables.
  Cause:
  
  Modification of Decimal Places: The primary cause of this error is the attempt to change the number of decimal places for a field in a structure or data element that is already defined and used in other objects.
  Active Objects: If the structure or data element is active and has been used in other programs, tables, or function modules, changing its definition can lead to inconsistencies.
  Dependencies: Other objects that depend on the structure may not be able to handle the change, leading to potential data integrity issues.
  
  Solution:
  
  Revert Changes: If you have made changes to the decimal places, revert them back to the original settings. This is the simplest solution if the change is not critical.
  Create a New Data Element: If you need to change the decimal places, consider creating a new data element or structure with the desired decimal places instead of modifying the existing one. This avoids conflicts with existing references.
  Check Dependencies: Use transaction SE11 (Data Dictionary) to check where the structure or data element is being used. You can use the "Where-Used List" feature to identify dependent objects.
  Transport Requests: If the change is necessary and you are working in a development environment, ensure that the changes are properly transported to the quality assurance or production environment after thorough testing.
  Consult Documentation: Review SAP documentation or consult with your SAP Basis or ABAP team for best practices regarding changes to data dictionary objects.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), SE38 (ABAP Editor).
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions for this specific error.
  Testing: Always test changes in a development or quality assurance environment before applying them to production to avoid disruptions.
  
  By following these steps, you should be able to resolve the DT904 error and make the necessary adjustments to your SAP data structures.