How To Fix MG604 - Materials are identical

MG604 - Overview

• Message type: E = Error

• Message class: MG - Batch input: material master

• Message number: 604

• Message text: Materials 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.

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.

MG604 - Details

• The SAP error message MG604 ("Materials are identical") typically occurs in the context of inventory management or material master data when you are trying to perform an operation that involves two or more materials that the system recognizes as identical. This can happen in various transactions, such as during goods movements, stock transfers, or when trying to create a new material that already exists in the system.
  
  Cause:
  
  Duplicate Material Numbers: The most common cause is that the materials you are trying to process have the same material number or are otherwise considered identical by the system.
  Material Master Data: The materials may have identical characteristics, such as material type, plant, or storage location, leading the system to treat them as the same.
  Transaction Context: The error can also arise in specific transactions where the system checks for uniqueness of materials, such as during a transfer posting or when trying to create a new