How To Fix /SCMB/DDD_BUF_MAINT066 - Overwriting of existing entries is switched off

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/DDD_BUF_MAINT -

• Message number: 066

• Message text: Overwriting of existing entries is switched off

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/DDD_BUF_MAINT066 - Overwriting of existing entries is switched off ?

  The SAP error message /SCMB/DDD_BUF_MAINT066 indicates that there is an issue with the data buffer maintenance in the Supply Chain Management (SCM) module, specifically related to the overwriting of existing entries in the data buffer. This error typically arises when there is an attempt to insert or update data in a buffer where the system is configured to prevent overwriting existing entries.
  Cause:
  
  Configuration Settings: The system may be configured to disallow overwriting of existing entries in the data buffer. This is often a deliberate setting to prevent data loss or corruption.
  Data Integrity Constraints: The data being processed may violate integrity constraints that prevent overwriting existing records.
  Buffer Locking: There may be locks on the buffer that prevent modifications, or the buffer may be in a read-only state.
  Incorrect Data Handling: The data being processed may not meet the expected format or criteria, leading to the system rejecting the overwrite attempt.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the data buffer in the SCM module. Ensure that the settings allow for overwriting if that is the desired behavior.
  Data Validation: Validate the data being processed to ensure it meets all necessary criteria and integrity constraints. Correct any issues before attempting to write to the buffer again.
  Buffer Management: If applicable, check for any locks on the buffer. Ensure that no other processes are holding locks that would prevent overwriting.
  Error Handling: Implement error handling in your data processing logic to manage situations where overwriting is not allowed. This may involve updating existing records instead of trying to overwrite them.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional context and troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  Transaction Codes: Familiarize yourself with transaction codes related to data buffer maintenance in SCM, such as /SCMB/DDD_BUF_MAINT for managing data buffers.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.