How To Fix IM121 - No valid sign set

IM121 - Overview

• Message type: E = Error

• Message class: IM - Maintenance notifications

• Message number: 121

• Message text: No valid sign set

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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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 IM121 - No valid sign set ?

  The SAP error message IM121 "No valid sign set" typically occurs in the context of Inventory Management (IM) or Material Management (MM) when there is an issue with the configuration of the document types or the settings related to the movement types in SAP.
  
  Cause:
  
  Missing or Incorrect Configuration: The error often arises when the system cannot find a valid "sign" for the movement type being processed. This can happen if the movement type is not properly configured in the system.
  Document Type Issues: If the document type associated with the movement type does not have a valid sign set, this error can occur.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to perform the action, leading to this error.
  Custom Development: If there are custom developments or enhancements in the system that affect the movement types or document types, they may lead to this error.
  
  
  Solution:
  
  
  Check Movement Type Configuration:
  
  Go to the transaction