How To Fix /SAPAPO/OM_ERROR2427 - Negative time offset in subline

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR2 -

• Message number: 427

• Message text: Negative time offset in subline

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR2427 - Negative time offset in subline ?

  The SAP error message /SAPAPO/OM_ERROR2427 indicates a negative time offset in a subline within the Advanced Planning and Optimization (APO) module. This error typically arises during the planning process when there is an inconsistency in the time settings for a specific subline item in a production or planning order.
  Cause:
  
  Negative Time Offset: The error suggests that there is a negative time offset defined for a subline item, which is not permissible. This can occur if the start time of a subline is set to occur before the end time of a preceding operation or if the scheduling parameters are incorrectly configured.
  Incorrect Master Data: Issues with master data, such as incorrect lead times, production durations, or scheduling parameters, can lead to this error.
  Planning Version Issues: If the planning version is not correctly set or if there are inconsistencies in the planning data, it may lead to negative offsets.
  Resource Availability: If resources are not available when they are scheduled to be used, it can create a situation where the time offsets become negative.
  
  Solution:
  
  Check Subline Configuration: Review the configuration of the subline in question. Ensure that the start and end times are correctly defined and that there are no overlaps that would cause a negative offset.
  Review Master Data: Verify the master data related to the production or planning order. Check lead times, production durations, and any other relevant parameters to ensure they are set correctly.
  Adjust Scheduling Parameters: If necessary, adjust the scheduling parameters for the operations involved. This may include changing the start or end times or modifying the sequence of operations.
  Check Resource Availability: Ensure that the resources required for the operations are available at the scheduled times. If not, adjust the scheduling to reflect realistic availability.
  Re-run Planning: After making the necessary adjustments, re-run the planning process to see if the error persists.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/SDP94 (for planning board) or /SAPAPO/OM_ORDER (for order management) to analyze and adjust the relevant data.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on resolving it.
  Documentation: Refer to SAP documentation on APO and production planning for more detailed information on scheduling and time management.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP APO for further assistance.