How To Fix ME402 - Fewer than two schedule lines are not suitable for compression

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 402

• Message text: Fewer than two schedule lines are not suitable for compression

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ME402 - Fewer than two schedule lines are not suitable for compression ?

  The SAP error message ME402, which states "Fewer than two schedule lines are not suitable for compression," typically occurs in the context of the Material Management (MM) module when attempting to compress schedule lines in a purchase order or a scheduling agreement. This error indicates that the system requires at least two schedule lines to perform a compression operation, but it has found fewer than that.
  Cause:
  
  Insufficient Schedule Lines: The primary cause of this error is that there are not enough schedule lines available for the compression process. Compression is only applicable when there are at least two schedule lines that can be combined into one.
  Single Schedule Line: If there is only one schedule line, the system cannot perform compression, as there is nothing to compress it with.
  Deleted or Inactive Schedule Lines: If schedule lines have been deleted or are inactive, it may lead to fewer than two schedule lines being available for compression.
  
  Solution:
  
  Check Schedule Lines: Review the purchase order or scheduling agreement to ensure that there are at least two active schedule lines available for compression.
  Add Schedule Lines: If there is only one schedule line, consider adding another schedule line to the order if applicable.
  Review Deletions: Ensure that no necessary schedule lines have been inadvertently deleted or marked as inactive.
  Use Alternative Processing: If compression is not necessary, you may choose to process the schedule lines without compression.
  Consult Documentation: Refer to SAP documentation or help resources for additional guidance on handling schedule lines and compression.
  
  Related Information:
  
  Transaction Codes: You may encounter this error while using transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), or ME31K (Create Scheduling Agreement).
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  User Roles and Permissions: Ensure that you have the necessary permissions to modify schedule lines and perform compression operations.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the MM module for further assistance.