How To Fix C1221 - Internal error: &1 (OMERK=&2), overwrite deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 221

• Message text: Internal error: &1 (OMERK=&2), overwrite deleted

What causes this issue?

The internal key for overwriting the characteristic &V1& was deleted
accidentally. The class no longer has a reference to the overwrite
(KSML-OMERK), but only the original master data of the characteristic
&V1&.

System Response

The transaction is canceled to prevent the overwrite being deleted on
the database.

How to fix this error?

Start the transaction again.

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 C1221 - Internal error: &1 (OMERK=&2), overwrite deleted ?

  The SAP error message C1221, which states "Internal error: &1 (OMERK=&2), overwrite deleted," typically indicates an internal inconsistency or issue within the SAP system, particularly related to the handling of certain data records. This error can occur in various contexts, often related to the configuration or processing of materials, orders, or other transactional data.
  Cause:
  
  Data Integrity Issues: The error may arise due to inconsistencies in the database, such as attempts to overwrite or access deleted records.
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they might be causing unexpected behavior leading to this error.
  System Bugs: There may be bugs in the SAP version you are using that trigger this error under specific conditions.
  Configuration Issues: Incorrect configuration settings in the relevant modules (like Material Management or Sales and Distribution) can lead to this error.
  
  Solution:
  
  Check for Data Integrity: Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for inconsistencies. Look for any records that should not exist or are marked as deleted.
  Review Custom Code: If there are any custom programs or enhancements, review the code to ensure it is not trying to access or modify deleted records.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address this specific error. There may be patches or updates available that resolve the issue.
  System Logs: Use transaction SLG1 to check application logs for more detailed error messages that could provide additional context.
  Consult SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with the error details, including the context in which it occurs, to help them diagnose the problem.
  Testing in a Sandbox: If possible, replicate the issue in a sandbox environment to test potential solutions without affecting the production system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE16, SLG1, and others that can help in diagnosing the issue.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Documentation: Review SAP documentation related to the specific modules you are working with to ensure that all configurations are set up correctly.
  
  Always ensure that you have proper backups and follow best practices when making changes to the system to avoid further issues.