How To Fix /SAPAPO/CTM1423 - No source of supply found for external procurement

/SAPAPO/CTM1423 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 423

• Message text: No source of supply found for external procurement

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1423 - No source of supply found for external procurement ?

  The SAP error message /SAPAPO/CTM1423 indicates that the system could not find a source of supply for external procurement in the context of the SAP Advanced Planning and Optimization (APO) module, specifically within the Capacity Planning and Supply Network Planning functionalities. This error typically arises during the planning process when the system attempts to create procurement proposals but cannot identify a valid source for the required materials.
  Causes:
  
  Missing Source of Supply: There may be no valid source of supply defined for the material in the relevant planning area.
  Incorrect Master Data: The material master or vendor master data may not be set up correctly, leading to the absence of valid procurement sources.
  Planning Version Issues: The planning version being used may not have the necessary data or settings for external procurement.
  Procurement Type Settings: The procurement type for the material may not be set to allow external procurement (e.g., it may be set to