How To Fix IM121 - No valid sign set

SAP Error Message - Details

• 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.

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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 code OMJJ to check the configuration of the movement types.
  Ensure that the movement type you are trying to use has a valid sign set. The sign set determines whether the movement is an increase or decrease in inventory.
  
  
  
  Check Document Type Configuration:
  
  Use transaction code OBA7 to check the configuration of document types.
  Ensure that the document type associated with the movement type has a valid sign set.
  
  
  
  Review User Authorizations:
  
  Ensure that the user has the necessary authorizations to perform the transaction. Check the user roles and authorizations in transaction SU01.
  
  
  
  Consult with Basis or ABAP Team:
  
  If the issue persists, consult with your SAP Basis or ABAP team to check for any custom developments or enhancements that might be affecting the movement types or document types.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that might address this specific error. You can search for notes in the SAP Support Portal.
  
  
  
  Related Information:
  
  Movement Types: Movement types in SAP define the type of stock movement (e.g., goods receipt, goods issue, transfer postings).
  Document Types: Document types are used to categorize different types of documents in SAP, such as purchase orders, invoices, etc.
  Transaction Codes:
  
  OMJJ: Configuration of movement types.
  OBA7: Configuration of document types.
  SU01: User maintenance to check authorizations.
  
  
  
  If you continue to experience issues after following these steps, it may be beneficial to reach out to SAP support or your internal SAP support team for further assistance.