How To Fix MG601 - Material numbers are identical

SAP Error Message - Details

• Message type: E = Error

• Message class: MG - Batch input: material master

• Message number: 601

• Message text: Material numbers are identical

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MG601 - Material numbers are identical ?

  The SAP error message MG601 ("Material numbers are identical") typically occurs when you are trying to create or modify a material document, and the system detects that the material numbers being processed are the same. This can happen in various transactions, such as goods movements, inventory management, or material document postings.
  Cause:
  
  Duplicate Entries: The most common cause is that the same material number is being entered multiple times in a single transaction or document.
  Incorrect Data Entry: Users may inadvertently enter the same material number in fields where different material numbers are expected.
  System Configuration: In some cases, system settings or configurations may lead to this error if they enforce unique constraints on material numbers.
  
  Solution:
  
  Check Input Data: Review the data you are entering to ensure that you are not duplicating material numbers. If you are processing multiple items, make sure each material number is unique.
  Correct the Transaction: If you find that you have entered the same material number, correct it by either removing the duplicate entry or replacing it with the correct material number.
  Use Different Transactions: If you need to process the same material number for different operations, consider separating them into different transactions or documents.
  Consult Documentation: Refer to SAP documentation or help resources for the specific transaction you are using to understand the expected input format and requirements.
  Check for Custom Logic: If your organization has custom enhancements or logic in place, check with your SAP support team to see if there are any specific rules that might be causing this error.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to inventory management, such as MB1A (Goods Withdrawal), MB1B (Transfer Posting), and MB1C (Other Goods Receipts).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Training: Ensure that users are trained on the correct procedures for entering material numbers to minimize the occurrence of this error.
  
  If the problem persists after checking these aspects, it may be beneficial to involve your SAP support team or consult with an SAP expert for further investigation.