Message type: E = Error
Message class: U9 - Message Class for Output in Application Log
Message number: 138
Message text: Material &1 plant &2 prod.vers. &3: Component &4 is a by-product
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U9138
- Material &1 plant &2 prod.vers. &3: Component &4 is a by-product ?The SAP error message U9138 indicates that there is an issue related to a component in a production order or bill of materials (BOM) that is classified as a by-product. This error typically arises in the context of production planning and execution, particularly when dealing with materials that are not standard components but rather by-products of a production process.
Cause: The error message U9138 is triggered when: A component in the BOM or production order is defined as a by-product, but the system expects it to be a standard component. The production version or the plant configuration does not support by-products in the context of the operation being performed. There may be inconsistencies in the master data setup for the material, plant, or production version.
Solution: To resolve this error, you can take the following steps: Check the BOM and Production Version: Verify the BOM for the material in question and ensure that the component is correctly defined as
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