Message type: E = Error
Message class:  BOS03 - Costing: Sales Documents with BOS 
Message number: 115
Message text: Costing is attached to Outline
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The SAP error message BOS03115, which states "Costing is attached to Outline," typically occurs in the context of SAP's Project System (PS) or when dealing with cost estimates in relation to outline agreements or contracts. This error indicates that there is a conflict or issue with the costing data associated with an outline agreement or a project.
Cause: Costing Data Exists: The error usually arises when there is existing costing data linked to an outline agreement or project, and an attempt is made to change or delete that costing data without first addressing the existing associations. Locked Data: The costing data may be locked due to ongoing processes or transactions that are referencing it. Inconsistent Data: There may be inconsistencies in the data that prevent the system from processing the request.
Solution: Check Existing Costing Data: Review the outline agreement or project to see if there are existing cost estimates or costing data. You may need
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