How To Fix BOS01136 - Chaneg not possible: service line &1 is assigned to a basic line

BOS01136 - Overview

• Message type: E = Error

• Message class: BOS01 - Customer BOS Processing

• Message number: 136

• Message text: Chaneg not possible: service line &1 is assigned to a basic line

Self-Explanatory Message

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BOS01136 - Details

• The SAP error message BOS01136 indicates that a change is not possible because a service line is assigned to a basic line. This typically occurs in the context of service management or billing processes where service lines are linked to basic lines (such as a main service or product line).
  
  Cause:
  The error arises when you attempt to modify or delete a service line that is linked to a basic line. This linkage is often enforced by the system to maintain data integrity and ensure that the relationships between service and basic lines are preserved.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Assignment: Verify the assignment of the service line to the basic line. You can do this by navigating to the relevant transaction or document where the error occurred and checking the details of the service line.
  
  
  Remove the Assignment: If you need to change or delete the service