Message SAP WRF_PPW012 - Pricing document for material &1, sales unit &2 could not be read

Diagnosis
Markdown proposals already exist for material &V1& and sales unit &V2&.At least one of these markdown proposals has an incorrect or no longerexisting pricing document. This causes inconsistencies in pricing, whichmeans that no new markdown proposals for this material can be enhanced.

Procedure
First delete all markdown proposals existing for this material. Thentransport the new markdown proposals into the ERP system again andenhance them there.