How To Fix /SAPAPO/APX090 - Table is not in customer namespace 'YAPX_' or 'ZAPX_'

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/APX -

• Message number: 090

• Message text: Table is not in customer namespace 'YAPX_' or 'ZAPX_'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/APX090 - Table is not in customer namespace 'YAPX_' or 'ZAPX_' ?

  The SAP error message /SAPAPO/APX090 Table is not in customer namespace 'YAPX_' or 'ZAPX_' typically occurs in the context of SAP Advanced Planning and Optimization (APO) when a user attempts to access or manipulate a table that is not defined in the customer namespace. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Namespace Restriction: In SAP, objects (like tables, function modules, etc.) are categorized into namespaces. The standard SAP objects are usually in the default namespace, while customer-specific objects are expected to be in the 'Y' or 'Z' namespaces. The error indicates that the table being accessed is not in the expected customer namespace.
  Incorrect Table Reference: The table being referenced may not be intended for customer use or may not exist in the system.
  Development Environment: If you are working in a development environment, the table may not have been created or activated properly.
  
  Solution:
  
  Check Table Name: Verify the name of the table you are trying to access. Ensure that it is correctly spelled and that it exists in the system.
  Use Customer Namespace: If you need to create a custom table, ensure that you create it in the customer namespace (starting with 'Y' or 'Z'). You can do this by using the Data Dictionary (SE11) to create a new table.
  Review Authorization: Ensure that you have the necessary authorizations to access the table. Sometimes, authorization issues can lead to misleading error messages.
  Consult Documentation: Check the SAP documentation or notes related to the specific table or function you are trying to use. There may be specific guidelines or restrictions.
  Contact SAP Support: If you believe the table should be accessible or if you are unsure about the correct namespace, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) to investigate the objects in question.
  Development Guidelines: Review SAP's guidelines on naming conventions and object management to ensure compliance with best practices.
  
  By following these steps, you should be able to resolve the error and understand the context in which it occurs.