Message type: E = Error
Message class:  WR_POWL - Message Class for Retail Power Lists UI communication 
Message number: 012
Message text: Not all condition types have data maintained in condition header level
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SAP Error Message: WR_POWL012 – Not all condition types have data maintained in condition header level
Cause: This error occurs in SAP when working with condition records, typically in the context of pricing or condition maintenance (e.g., in Sales and Distribution or Materials Management). The system expects certain condition types to have data maintained at the condition header level, but some required condition types are missing this data. In other words, when you try to process or save a condition record or pricing procedure, SAP checks if all mandatory condition types have their data maintained properly. If one or more condition types that are expected to have header-level data are missing, the system throws this error. Common scenarios include: Condition types configured to be maintained at the header level but no data entered. Incomplete or inconsistent condition records. Custom or standard pricing procedures requiring certain condition types at header level. POWL (Personal Object Worklist) related processes where condition data
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