How To Fix /SAPAPO/RET_MESSAGES135 - The start shift must be equal to one for this time unit

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 135

• Message text: The start shift must be equal to one for this time unit

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RET_MESSAGES135 - The start shift must be equal to one for this time unit ?

  The SAP error message /SAPAPO/RET_MESSAGES135 indicates that there is an issue with the start shift in the context of a planning or scheduling operation in SAP Advanced Planning and Optimization (APO). Specifically, the error states that "The start shift must be equal to one for this time unit." This typically occurs when the system expects a certain configuration or input that is not being met.
  Cause:
  
  Incorrect Shift Configuration: The start shift for the time unit in question is not set to the expected value (which should be 1).
  Planning Version Issues: The planning version being used may have incorrect settings or configurations.
  Data Entry Errors: There may be an error in the data entry for the planning object or the time unit.
  Master Data Issues: The master data related to the product, location, or resource may not be correctly defined.
  
  Solution:
  
  Check Shift Settings: Review the shift settings in the relevant planning book or data view. Ensure that the start shift is set to 1 for the time unit you are working with.
  Review Planning Version: Ensure that you are using the correct planning version and that it is properly configured.
  Validate Data Entry: Double-check the data entries for the planning object to ensure that all required fields are filled out correctly.
  Master Data Review: Verify that the master data for the product, location, or resource is correctly defined and that there are no inconsistencies.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on configuring shifts and time units in APO.
  Contact Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO that may help in troubleshooting, such as /SAPAPO/SDP94 for planning books or /SAPAPO/MC90 for master data.
  SAP Notes: Check for any SAP Notes related to this error message that may provide additional insights or patches.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the root cause of the error and implement the necessary corrections to resolve it.