How To Fix WM090 - Only standard modules are allowed (cat. selected: &)

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 090

• Message text: Only standard modules are allowed (cat. selected: &)

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WM090 - Only standard modules are allowed (cat. selected: &) ?

  The SAP error message WM090 ("Only standard modules are allowed (cat. selected: &)") typically occurs in the Warehouse Management (WM) module when there is an attempt to use a non-standard module or category in a process that only accepts standard modules. This error can arise in various scenarios, such as during the creation of transfer orders, inventory management, or when configuring warehouse processes.
  Cause:
  
  Non-Standard Module Usage: The error indicates that a non-standard module or category has been selected in a process that only allows standard modules. This could be due to incorrect configuration or an attempt to use a custom module that is not recognized by the system.
  Configuration Issues: The system may be configured to only accept certain standard modules, and if a custom or non-standard module is selected, it triggers this error.
  Data Entry Errors: Users may inadvertently select the wrong module or category during data entry, leading to this error.
  
  Solution:
  
  Check Module Selection: Review the module or category that has been selected in the transaction that triggered the error. Ensure that it is a standard module recognized by SAP.
  Configuration Review: If you are a system administrator or have access to configuration settings, check the configuration of the Warehouse Management module to ensure that it is set up correctly to allow the necessary standard modules.
  User Training: Provide training to users on the correct selection of modules and categories to avoid data entry errors that lead to this message.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific transaction or process you are working with to ensure compliance with standard practices.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in the WM module that may be related to the error, such as LT01 (Create Transfer Order), LT10 (Transfer Order Confirmation), etc.
  SAP Notes: Check for any SAP Notes related to WM090 for additional context or patches that may address known issues.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users.
  
  By following these steps, you should be able to identify the cause of the WM090 error and implement a solution to resolve it.