How To Fix IM123 - Assembly &1 in planning plant &2 does not exist

IM123 - Overview

• Message type: E = Error

• Message class: IM - Maintenance notifications

• Message number: 123

• Message text: Assembly &1 in planning plant &2 does not exist

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?

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Smart SAP Assistant

• What is the cause and solution for SAP error message IM123 - Assembly &1 in planning plant &2 does not exist ?

  The SAP error message IM123 indicates that there is an issue with the assembly or component in the planning plant specified in the transaction. This error typically arises when the system cannot find the specified assembly in the given planning plant. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Non-Existent Assembly: The assembly (or material) specified in the error message does not exist in the specified planning plant.
  Incorrect Planning Plant: The planning plant specified may be incorrect or not set up properly in the system.
  Master Data Issues: The material master data for the assembly may not be maintained correctly, or the assembly may not be assigned to the planning plant.
  Data Migration Issues: If data was recently migrated or imported, there may have been errors in the data transfer that resulted in missing or incorrect entries.
  
  Solutions:
  
  
  Check Material Existence:
  
  Use transaction code MM03 to check if the assembly exists in the