How To Fix M3307 - Material already maintained for this transaction/event

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 307

• Message text: Material already maintained for this transaction/event

What causes this issue?

The material master record already exists for the chosen view or
organizational level.

How to fix this error?

Check your entries and, if necessary, correct them. Alternatively,
call up the material master record in Change mode.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3307 - Material already maintained for this transaction/event ?

  The SAP error message M3307 ("Material already maintained for this transaction/event") typically occurs when you attempt to perform a transaction related to a material that has already been processed for the specific event or transaction type in question. This can happen in various scenarios, such as during inventory management, goods movements, or when trying to create or change a material document.
  Causes:
  
  Duplicate Entry: The material has already been processed for the same transaction type, leading to a duplicate entry.
  Transaction Lock: The material might be locked due to another transaction being processed simultaneously.
  Incorrect Data Entry: There may be an attempt to enter data that is not valid for the current state of the material.
  Configuration Issues: There could be issues with the configuration of the material management module that prevent the transaction from being completed.
  
  Solutions:
  
  Check Existing Transactions: Review the transaction history for the material to confirm if it has already been processed. You can use transaction codes like MB03 (Display Material Document) to check the material document.
  Avoid Duplicate Processing: Ensure that you are not trying to process the same transaction multiple times. If the transaction has already been completed, you may need to adjust your approach.
  Unlock the Material: If the material is locked due to another transaction, wait for that transaction to complete or check with your team to see if it can be released.
  Review Configuration: If you suspect a configuration issue, consult with your SAP MM (Materials Management) consultant to ensure that the settings are correct for the material and transaction type.
  Error Logs: Check the system logs for any additional error messages or warnings that might provide more context about the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MB1A: Goods Withdrawal
  MB1B: Transfer Posting
  MB1C: Other Goods Receipts
  MB03: Display Material Document
  
  
  SAP Notes: Search for SAP Notes related to error M3307 in the SAP Support Portal for any known issues or patches.
  User Authorization: Ensure that you have the necessary authorizations to perform the transaction on the material in question.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.