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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message BOS01081 - Internal line is not allowed in combination with altern. or line category ?

  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 inconsistencies or errors in the data that define the BOM or the production order, leading to this error when the system attempts to process it.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Review BOM Configuration: Check the BOM configuration to ensure that internal lines are correctly defined and that they are not being incorrectly combined with alternative items or incompatible line categories.
  Adjust Line Categories: If you are using alternative items, ensure that the line categories are compatible. You may need to change the line category of the internal line or remove it from the BOM if it is not necessary.
  Check for Data Integrity: Validate the data in the BOM and related components to ensure there are no inconsistencies. This may involve checking for missing or incorrect entries in the BOM or related master data.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on BOM configuration and line category usage to ensure compliance with best practices.
  Testing: After making changes, test the BOM or production order to ensure that the error no longer occurs.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CS03 (Display BOM) to manage BOMs effectively.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.