How To Fix /SAPAPO/CTM4420 - Enter a source of supply for in-house production

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CTM4 -

• Message number: 420

• Message text: Enter a source of supply for in-house production

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM4420 - Enter a source of supply for in-house production ?

  The SAP error message /SAPAPO/CTM4420 indicates that there is no source of supply defined for in-house production in the context of the SAP Advanced Planning and Optimization (APO) module, specifically when using the Capable-to-Match (CTM) functionality. This error typically arises during the planning process when the system attempts to allocate production orders but cannot find a valid source of supply.
  Cause:
  
  Missing Source of Supply: The most common cause is that the material in question does not have a defined source of supply for in-house production in the planning data.
  Incorrect Master Data: The material master or the production version may not be set up correctly, leading to the absence of a valid production resource.
  Planning Parameters: The planning parameters for the product may not be configured to allow in-house production.
  Resource Availability: The production resources may not be available or may not be defined for the specific material.
  
  Solution:
  
  
  Define Source of Supply:
  
  Go to the material master (transaction MM02) and check the relevant views (e.g., MRP, Production) to ensure that a valid source of supply is defined for in-house production.
  Ensure that the production version is correctly assigned to the material.
  
  
  
  Check Production Version:
  
  Ensure that the production version is maintained for the material in the C223 transaction (Maintain Production Versions).
  Verify that the production version is active and correctly linked to the relevant resources.
  
  
  
  Review Planning Parameters:
  
  Check the planning parameters in the CTM settings to ensure that in-house production is allowed for the material.
  Ensure that the planning strategy allows for in-house production.
  
  
  
  Resource Availability:
  
  Check the availability of the production resources in the PPDS (Production Planning and Detailed Scheduling) settings.
  Ensure that the resources are correctly defined and available for the production process.
  
  
  
  Run Planning Again:
  
  After making the necessary adjustments, re-run the planning process to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material Master
  C223: Maintain Production Versions
  CTM: Capable-to-Match Planning
  
  
  Documentation: Refer to SAP Help documentation for detailed guidance on configuring sources of supply and production versions.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  By following these steps, you should be able to resolve the /SAPAPO/CTM4420 error and ensure that your in-house production planning is correctly set up.