How To Fix /SAPAPO/RRP_CDOC035 - No preceding operation or start time = 0

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RRP_CDOC -

• Message number: 035

• Message text: No preceding operation or start time = 0

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RRP_CDOC035 - No preceding operation or start time = 0 ?

  The SAP error message /SAPAPO/RRP_CDOC035 No preceding operation or start time = 0 typically occurs in the context of Advanced Planning and Optimization (APO) when dealing with production planning and scheduling. This error indicates that the system is unable to find a preceding operation for a particular production order or that the start time for the operation is set to zero, which is not valid for scheduling purposes.
  Causes:
  
  Missing Preceding Operations: The production order may not have any preceding operations defined, which are necessary for the scheduling logic to function correctly.
  Incorrect Start Time: The start time for the operation is set to zero, which is not acceptable as it does not provide a valid time frame for scheduling.
  Data Inconsistencies: There may be inconsistencies or missing data in the master data (like routing or work center) that are required for the operation to be scheduled.
  Configuration Issues: There could be issues with the configuration of the production process or the planning strategy that leads to this error.
  
  Solutions:
  
  Check Production Order: Review the production order in question to ensure that all necessary operations are defined and that they have valid preceding operations.
  Validate Start Times: Ensure that the start times for all operations are set correctly and are not equal to zero. Adjust the start times as necessary.
  Review Routing and Work Center: Check the routing and work center assignments for the production order to ensure that they are correctly configured and that all necessary data is present.
  Recreate the Order: If the order is corrupted or has missing data, consider recreating the production order to ensure that all necessary information is included.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the error and additional troubleshooting steps.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CO02 (Change Production Order) or CO03 (Display Production Order) to check the details of the production order.
  APO Configuration: Familiarize yourself with the configuration settings in APO related to production planning and scheduling.
  Master Data: Ensure that all relevant master data (material master, routing, work center) is correctly maintained and up to date.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.