How To Fix FS651 - Next lot & must be a sequential lot

SAP Error Message - Details

• Message type: E = Error

• Message class: FS - Messages from Tax Routines / Prenumbered Checks

• Message number: 651

• Message text: Next lot & must be a sequential lot

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FS651 - Next lot & must be a sequential lot ?

  The SAP error message FS651 ("Next lot & must be a sequential lot") typically occurs in the context of production or inventory management when dealing with lot management in SAP. This error indicates that the system expects the next lot number to follow a specific sequence based on the defined lot number range or rules.
  Cause:
  
  Lot Number Configuration: The lot number configuration in the system may require that lot numbers be sequential. If the next lot number being processed does not follow the expected sequence, this error will be triggered.
  Manual Entry Error: If a user manually enters a lot number that does not conform to the expected sequence, this error will occur.
  Lot Number Assignment: The system may be configured to enforce strict lot number assignment rules, which can lead to this error if the next lot number does not meet those rules.
  Missing Lot Numbers: If there are gaps in the lot number sequence (e.g., if lot number 1001 is followed by 1003 without 1002 being used), the system may raise this error when trying to assign the next lot.
  
  Solution:
  
  Check Lot Number Configuration: Review the configuration settings for lot number management in the system. Ensure that the settings align with your business requirements and that they allow for the expected sequence of lot numbers.
  Correct Lot Number Entry: If the error is due to manual entry, ensure that the next lot number being entered is indeed the next in the sequence. You may need to consult the list of existing lot numbers to determine the correct next number.
  Adjust Lot Number Assignment Rules: If the current rules are too strict for your business processes, consider adjusting them to allow for more flexibility in lot number assignment.
  Review Lot Number Gaps: Investigate any gaps in the lot number sequence. If there are missing lot numbers, you may need to address this by either creating the missing lots or adjusting the sequence to accommodate the existing lots.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on lot number management and error handling.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to lot number management and the FS651 error.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM02 (Change Material), MB1C (Other Goods Receipts), or MB1A (Goods Withdrawal) that may be involved in the process where the error occurs.
  User Exits and BAdIs: If your organization has custom developments, check for any user exits or BAdIs that might affect lot number processing.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a consultant who specializes in SAP logistics and inventory management.