How To Fix /SAPAPO/PROD091 - Primary resource not maintained

/SAPAPO/PROD091 - Overview

• Message type: E = Error

• Message class: /SAPAPO/PROD -

• Message number: 091

• Message text: Primary resource not maintained

Self-Explanatory Message

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/SAPAPO/PROD091 - Details

• The SAP error message /SAPAPO/PROD091 indicates that a primary resource has not been maintained for a specific product in the Advanced Planning and Optimization (APO) module. This error typically arises during planning activities when the system attempts to perform operations that require a primary resource, but none has been defined for the product in question.
  
  Cause:
  
  Missing Resource Assignment: The product does not have a primary resource assigned in the APO system.
  Incorrect Configuration: The resource may not be properly configured or activated in the system.
  Data Transfer Issues: If data is being transferred from another system (like SAP ERP), there may have been issues during the transfer that resulted in missing resource assignments.
  
  
  Solution:
  To resolve the /SAPAPO/PROD091 error, follow these steps:
  
  
  Check Resource Assignment:
  
  Go to the product master data in APO (transaction /SAPAPO/MAT1).
  Verify if a primary resource is assigned to the product. If not, you need to assign a primary resource.
  
  
  
  Maintain Primary Resource:
  
  If a primary