How To Fix /SAPAPO/OM_ERROR2351 - Confirmation activity: end time smaller than remaining start time

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR2 -

• Message number: 351

• Message text: Confirmation activity: end time smaller than remaining start time

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR2351 - Confirmation activity: end time smaller than remaining start time ?

  The SAP error message /SAPAPO/OM_ERROR2351 indicates that there is a conflict in the scheduling of activities within the Advanced Planning and Optimization (APO) module. Specifically, the error states that the end time of a confirmation activity is smaller than the remaining start time, which means that the system is trying to confirm an activity that cannot logically occur because its end time is before the start time of the remaining activities.
  Cause:
  
  Incorrect Time Entries: The confirmation activity may have been entered with incorrect time values, leading to a situation where the end time is set before the start time of the next scheduled activity.
  Scheduling Conflicts: There may be overlapping activities or scheduling conflicts that have not been resolved, causing the system to generate this error.
  Data Inconsistencies: There could be inconsistencies in the master data or transaction data that affect the scheduling of activities.
  Resource Availability: The resources assigned to the activity may not be available during the specified time, leading to a scheduling issue.
  
  Solution:
  
  Check Time Entries: Review the confirmation activity's time entries to ensure that the end time is greater than the start time. Correct any discrepancies.
  Review Scheduling: Look at the overall scheduling of activities to identify any conflicts. Adjust the scheduling of activities as necessary to ensure that they do not overlap incorrectly.
  Validate Data: Check the master data (e.g., resources, production versions) and transaction data for any inconsistencies that could lead to this error. Correct any issues found.
  Resource Allocation: Ensure that the resources assigned to the activity are available during the specified time frame. If not, consider reallocating resources or adjusting the schedule.
  Use Transaction Codes: Utilize transaction codes like /SAPAPO/OM_ORDER or /SAPAPO/OM_CONF to analyze and manage the order and confirmation activities.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on resolving scheduling issues.
  Documentation: Refer to the SAP APO documentation for detailed information on activity confirmations and scheduling.
  Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.