Message type: E = Error
Message class:  CUOBOM1 - Configurable Order BOM 
Message number: 090
Message text: Template material &1 does not exist
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The SAP error message CUOBOM1090 indicates that the template material specified in the operation does not exist in the system. This error typically occurs when you are trying to create or modify a Bill of Materials (BOM) using a template that is not available in the database.
Cause: Non-Existent Template Material: The template material you are trying to use has not been created or has been deleted from the system. Incorrect Material Number: There may be a typo or incorrect material number entered when trying to reference the template. Authorization Issues: The user may not have the necessary authorizations to view or access the template material. Incorrect Plant or Company Code: The template material may exist, but not in the specified plant or company code.
Solution: Verify Template Material: Check if the template material exists in the system. You can do this by using transaction code MM03 (Display Material) and entering the material number to see if
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