How To Fix /SAPAPO/CTM1392 - Source of supply &1 cannot be used due to the lot size

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 392

• Message text: Source of supply &1 cannot be used due to the lot size

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1392 - Source of supply &1 cannot be used due to the lot size ?

  The SAP error message /SAPAPO/CTM1392 indicates that a source of supply (such as a vendor or production location) cannot be used for a particular planning situation due to lot size constraints. This typically occurs in the context of Advanced Planning and Optimization (APO) when the lot size defined for a source of supply does not meet the requirements of the planned order or demand.
  Cause:
  
  Lot Size Constraints: The source of supply has a defined minimum or maximum lot size that is not compatible with the quantity required for the order or demand.
  Lot Size Settings: The lot size settings in the material master or the source of supply may be incorrectly configured, leading to conflicts with the planning requirements.
  Planning Parameters: The planning parameters for the product may not align with the lot size settings of the source of supply.
  Order Quantity: The order quantity may be less than the minimum lot size or greater than the maximum lot size defined for the source of supply.
  
  Solution:
  
  
  Review Lot Size Settings: Check the lot size settings in the material master (under MRP views) and the source of supply (vendor or production location) to ensure they are correctly configured.
  
  Navigate to the material master and verify the lot size settings (e.g., minimum lot size, maximum lot size).
  Check the source of supply settings in the relevant transaction (e.g., transaction code ME11 for vendor info records).
  
  
  
  Adjust Order Quantity: If the planned order quantity is not within the defined lot size limits, consider adjusting the order quantity to meet the minimum or maximum lot size requirements.
  
  
  Change Planning Parameters: If necessary, adjust the planning parameters in the APO system to ensure they align with the lot size settings of the source of supply.
  
  
  Use Alternative Sources: If the current source of supply cannot fulfill the requirements due to lot size constraints, consider using an alternative source of supply that has compatible lot size settings.
  
  
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific guidance related to your configuration and business processes.
  
  
  Related Information:
  
  Lot Size Types: Understand the different types of lot sizes (e.g., fixed lot size, minimum lot size, maximum lot size) and how they impact planning.
  APO Configuration: Familiarize yourself with the configuration settings in APO related to sourcing and lot size management.
  Error Logs: Check the APO error logs for additional details or related messages that may provide further insight into the issue.
  SAP Notes: Look for relevant SAP Notes that may address known issues or provide updates related to this error message.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.