How To Fix DMC_DTL126 - Sender structure &1 is read only

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_DTL - Messages for DMC data transfer layer

• Message number: 126

• Message text: Sender structure &1 is read only

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_DTL126 - Sender structure &1 is read only ?

  The SAP error message DMC_DTL126, which states "Sender structure &1 is read only," typically occurs in the context of data management and data transfer processes, particularly when working with Data Migration Cockpit (DMC) or similar tools in SAP.
  Cause:
  The error indicates that the sender structure (the data structure from which you are trying to read or transfer data) is marked as read-only. This can happen for several reasons:
  
  Data Locking: The structure may be locked due to ongoing processes or transactions.
  Configuration Settings: The sender structure may have been configured to be read-only in the system settings.
  Incorrect Mapping: There may be an issue with how the data mapping is set up, leading to attempts to modify a read-only structure.
  Authorization Issues: The user may not have the necessary permissions to modify the data in the sender structure.
  
  Solution:
  To resolve the DMC_DTL126 error, you can take the following steps:
  
  
  Check Data Locking:
  
  Ensure that no other processes are currently using or locking the sender structure. You can check for active sessions or transactions that might be holding a lock.
  
  
  
  Review Configuration:
  
  Verify the configuration settings for the sender structure. Ensure that it is not set to read-only in the system settings or in the data migration project.
  
  
  
  Correct Mapping:
  
  Review the data mapping configuration in the Data Migration Cockpit. Ensure that the mapping is correctly set up and that you are not trying to write to a read-only field.
  
  
  
  User Authorizations:
  
  Check the user authorizations. Ensure that the user executing the data transfer has the necessary permissions to modify the sender structure.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or help resources related to the Data Migration Cockpit for any specific guidelines or troubleshooting steps related to this error.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration or version.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and guidelines on data transfer processes.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the DMC_DTL126 error and implement an appropriate solution.