How To Fix MR090 - This warehouse number is managed on an external system

SAP Error Message - Details

• Message type: E = Error

• Message class: MR - Stock overview for generic materials

• Message number: 090

• Message text: This warehouse number is managed on an external system

What causes this issue?

You wanted to display warehouse management (WM) stock data. However,
the <DS:GLOS.3526C148AFAB52B9E10000009B38F974>warehouse number</> for
the combination of plant and storage location chosen by you is managed
on an external system. As a result, it is not possible to display the
WM stock data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose a combination of plant and storage location with a warehouse
number managed on this system.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MR090 - This warehouse number is managed on an external system ?

  The SAP error message MR090, which states "This warehouse number is managed on an external system," typically occurs when you are trying to perform a transaction that involves a warehouse number that is not managed within the SAP system but rather in an external system. This can happen in scenarios where SAP is integrated with other warehouse management systems (WMS) or when using third-party logistics (3PL) providers.
  Cause:
  
  External Warehouse Management: The warehouse number you are trying to access is configured to be managed externally, meaning that all inventory and logistics processes for that warehouse are handled outside of SAP.
  Configuration Issues: There may be configuration settings in SAP that indicate the warehouse is external, but the necessary integration or data transfer is not set up correctly.
  Master Data Issues: The master data for the warehouse may not be correctly maintained, leading to discrepancies in how the warehouse is recognized by SAP.
  
  Solution:
  
  Check Warehouse Configuration: Verify the configuration of the warehouse number in SAP. Ensure that it is set up correctly and that it is intended to be managed externally. You can check this in the Customizing settings under Logistics Execution.
  Integration with External System: If the warehouse is indeed managed externally, ensure that the integration between SAP and the external system is functioning correctly. This may involve checking middleware or interfaces that facilitate data exchange.
  Use Correct Warehouse Number: If you are mistakenly trying to use a warehouse number that is external, ensure you are using the correct warehouse number that is managed within SAP.
  Consult Documentation: Review any documentation related to the external warehouse management system to understand how it interacts with SAP and what processes need to be followed.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or the support team of the external system for further assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to MR090. SAP frequently updates its knowledge base with solutions for common errors.
  Integration Scenarios: Familiarize yourself with the integration scenarios between SAP and external systems, especially if you are using EDI or other data exchange methods.
  Training and Documentation: Ensure that users are trained on how to handle transactions involving external warehouse management systems to minimize errors.
  
  By following these steps, you should be able to diagnose and resolve the MR090 error effectively.