How To Fix /SAPAPO/OM191 - Invalid stock type

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM -

• Message number: 191

• Message text: Invalid stock type

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM191 - Invalid stock type ?

  The SAP error message /SAPAPO/OM191 Invalid stock type typically occurs in the context of Advanced Planning and Optimization (APO) when there is an issue with the stock type being referenced in a planning or execution process. This error indicates that the stock type specified is not recognized or is invalid in the current context.
  Causes:
  
  Incorrect Stock Type: The stock type being used in the transaction or planning run does not exist in the system or is not defined correctly.
  Configuration Issues: The stock types may not be properly configured in the system, or there may be inconsistencies in the configuration settings.
  Master Data Issues: The material master data may not have the correct stock type assigned, or the stock type may not be valid for the specific material.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified stock type.
  
  Solutions:
  
  
  Check Stock Type Configuration:
  
  Go to the configuration settings in SAP and verify that the stock types are correctly defined. You can check this in the customizing settings under SPRO -> APO -> Global Settings -> Define Stock Types.
  
  
  
  Validate Material Master Data:
  
  Check the material master data for the specific material involved in the error. Ensure that the stock type is valid and correctly assigned.
  Use transaction MM03 to view the material master and verify the stock type settings.
  
  
  
  Review Planning Parameters:
  
  If the error occurs during a planning run, review the planning parameters and ensure that the stock types being used are valid for the planning scenario.
  
  
  
  Check User Authorizations:
  
  Ensure that the user executing the transaction has the necessary authorizations to access the stock type. This can be checked with the help of your SAP security team.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error. Sometimes, there are known issues or patches that can resolve the problem.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify where the invalid stock type is being referenced. This may require assistance from a technical consultant.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), SPRO (Customizing), and /SAPAPO/OM (APO Order Management).
  Documentation: Review SAP documentation related to stock types in APO for a better understanding of how they are used and configured.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the /SAPAPO/OM191 Invalid stock type error and implement a suitable solution.