How To Fix U9138 - Material &1 plant &2 prod.vers. &3: Component &4 is a by-product

U9138 - Overview

• 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

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 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