How To Fix /SAPAPO/RET_MESSAGES155 - Enter valid start shift

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 155

• Message text: Enter valid start shift

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 /SAPAPO/RET_MESSAGES155 - Enter valid start shift ?

  The SAP error message /SAPAPO/RET_MESSAGES155 with the description "Enter valid start shift" typically occurs in the context of SAP Advanced Planning and Optimization (APO) when a user is trying to enter or modify a shift in the planning process, but the input provided does not correspond to a valid shift configuration in the system.
  Cause:
  
  Invalid Shift Entry: The user may have entered a shift that does not exist in the system or is not defined in the shift planning configuration.
  Configuration Issues: The shift definitions may not be properly configured in the system, leading to the inability to recognize the entered shift.
  Data Entry Error: There may be a typographical error in the shift code or name entered by the user.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the shift data.
  
  Solution:
  
  
  Check Shift Configuration:
  
  Navigate to the shift definitions in the SAP system (usually found in the configuration settings for APO).
  Verify that the shift you are trying to enter is defined correctly and is active.
  
  
  
  Validate Input:
  
  Ensure that the shift code or name you are entering is correct. Double-check for any typographical errors.
  Use the search functionality to find the valid shifts available in the system.
  
  
  
  User Authorization:
  
  Check if the user has the necessary authorizations to access the shift data. If not, contact your system administrator to grant the required permissions.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or help files related to shift planning in APO for additional guidance on valid shift entries.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error message.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO that deal with shift planning, such as /SAPAPO/SHIFT or similar.
  SAP Notes: Search for SAP Notes related to this error message for any patches or updates that may address the issue.
  Training: If you are frequently encountering this error, consider additional training on shift planning and configuration in SAP APO to better understand the system's requirements.
  
  By following these steps, you should be able to resolve the error and successfully enter a valid start shift in your SAP APO system.