Message type: E = Error
Message class: KPN - Costing: Networks, Projects
Message number: 071
Message text: A costing for material &2 has already been maintained re WBS el. &1
Materials in valuated project stock are valued at WBS element,
material, and plan level.
The value for WBS element &V1&, material &V2&, and plant &V3& is
already prescribed by a unit costing.
The first time goods are received, they are valued using the unit
costing assigned to the component with the earliest requirements date.
You cannot create any more unit costings for WBS element &V1&, material
&V2&, and plant &V3&.
Adapt the existing unit costing as necessary.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
KPN071
- A costing for material &2 has already been maintained re WBS el. &1 ?The SAP error message KPN071 indicates that a costing for a specific material (denoted by &2) has already been maintained for a Work Breakdown Structure (WBS) element (denoted by &1). This typically occurs in the context of project controlling and cost planning within SAP.
Cause: Duplicate Costing Entry: The error arises when there is an attempt to maintain or change the costing for a material that has already been assigned to a WBS element. This can happen if: The user is trying to enter the same costing data again. There is an attempt to modify the existing costing data without first removing or adjusting the previous entry. Data Integrity: SAP enforces data integrity rules to prevent duplicate entries that could lead to inconsistencies in project costing and financial reporting.
Solution: Check Existing Costing: Navigate to the relevant transaction (e.g., CJI3 for project reports or CKO1 for cost planning) to review the existing costing entries for the specified
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