Message type: E = Error
Message class:  APPL_MM_PUR_PO - Message Class for Purchase Order 
Message number: 003
Message text: Purchasing organization &1 does not exist
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The SAP error message APPL_MM_PUR_PO003 indicates that the purchasing organization specified in a transaction does not exist in the system. This error typically occurs when creating or processing purchase orders, and it can be caused by several factors. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Incorrect Purchasing Organization: The purchasing organization code entered in the transaction does not match any existing purchasing organization in the system. Data Deletion: The purchasing organization may have been deleted or not properly configured in the system. Authorization Issues: The user may not have the necessary authorizations to access the purchasing organization.
Configuration Issues: The purchasing organization may not be assigned to the relevant company code or plant.
Solution: Verify the Purchasing Organization: Check the purchasing organization code entered in the transaction. Ensure that it is correct and exists in the system. You can do this by navigating to the relevant configuration or master data transaction (e.g., Transaction OX17
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