How To Fix BOS01081 - Internal line is not allowed in combination with altern. or line category

BOS01081 - Overview

• Message type: E = Error

• Message class: BOS01 - Customer BOS Processing

• Message number: 081

• Message text: Internal line is not allowed in combination with altern. or line category

What causes this issue?

You cannot define a service line with the line type "internal line"
additionally as a basic line, alternative line, bidder's line or a
supplementary line

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?

Check the indicator for the alternatives and the line categories. Set
the indicator:
No alternative
No line category

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

BOS01081 - Details

• The SAP error message BOS01081 indicates that there is an issue with the configuration of a bill of materials (BOM) or a similar structure where an internal line is not allowed in combination with alternative items or line categories. This typically occurs in the context of BOM processing or when working with production orders.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Incorrect BOM Configuration: The BOM may have been configured incorrectly, where an internal line (a line that is meant to represent a component or sub-assembly) is being used in a context that does not support it, such as with alternative items or specific line categories.
  Line Category Restrictions: Certain line categories may have restrictions on how they can be combined with other line types. For example, an internal line may not be allowed to coexist with alternative lines or certain categories of components.
  Data Integrity Issues: There may be