How To Fix DMC_GENERAL054 - Formal parameter of semantic descriptor cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 054

• Message text: Formal parameter of semantic descriptor cannot be changed

What causes this issue?

Length of a formal parameter of the semantic descriptor cannot be
reduced as the descriptor is being used by several fields.

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

System Response

Formal parameter of the semantic descriptor cannot be changed.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_GENERAL054 - Formal parameter of semantic descriptor cannot be changed ?

  The SAP error message DMC_GENERAL054 indicates that there is an issue with the semantic descriptor in the Data Migration Cockpit (DMC) where a formal parameter cannot be changed. This typically occurs when there is an attempt to modify a parameter that is not allowed to be changed due to the constraints of the data model or the configuration of the migration project.
  Cause:
  
  Immutable Parameters: The error often arises when trying to change a parameter that is defined as immutable in the semantic descriptor. This could be due to the way the data model is set up or the specific rules defined for the migration project.
  Incorrect Configuration: If the configuration of the migration project does not align with the expected parameters, it can lead to this error.
  Version Mismatch: Sometimes, using an incompatible version of the DMC or related components can lead to such issues.
  
  Solution:
  
  Review the Semantic Descriptor: Check the semantic descriptor configuration to ensure that you are not attempting to change any parameters that are meant to be immutable. Refer to the documentation for the specific parameters and their allowed modifications.
  Correct Configuration: Ensure that the configuration of your migration project aligns with the expected parameters. If you have made changes, revert them to the original settings and test again.
  Check for Updates: Make sure that you are using the latest version of the Data Migration Cockpit and any related components. If there are updates available, apply them and see if the issue persists.
  Consult Documentation: Refer to the SAP Help Portal or the specific documentation for the Data Migration Cockpit for guidance on the semantic descriptors and their parameters.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. Provide them with details of the error and the context in which it occurred.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  Training and Documentation: Familiarize yourself with the Data Migration Cockpit and its functionalities through SAP training materials or official documentation to better understand how to manage semantic descriptors.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.