How To Fix /SAPAPO/CTM1391 - No suitable source of supply was found due to the lot size

/SAPAPO/CTM1391 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 391

• Message text: No suitable source of supply was found due to the lot size

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1391 - No suitable source of supply was found due to the lot size ?

  The SAP error message /SAPAPO/CTM1391 indicates that the system could not find a suitable source of supply for a particular demand due to lot size constraints. This error typically occurs in the context of Advanced Planning and Optimization (APO) when using the Capable-to-Match (CTM) functionality.
  
  Cause:
  
  Lot Size Constraints: The lot size defined for the source of supply (e.g., vendor, production line) may not meet the requirements of the demand. For example, if the demand is for 100 units but the minimum lot size for the source of supply is 200 units, the system will not consider that source as suitable.
  Source of Supply Availability: The available sources of supply may not have the capacity or may not be able to produce or deliver the required quantity due to their defined lot sizes.
  Planning Parameters: Incorrect or overly restrictive planning parameters (like minimum order quantities, maximum order quantities, or lot size settings) can lead