SAP Message W/151 - Phase &1 mat. &2 does not exist in DChain &3 &4 - processing not possible

Diagnosis
The data that was transferred to the method should represent thecurrent status of the markdown plan on the database. However, itdiffers from the data on the database.
The phase (start date &V1&) entered for material &V2& was not found inthe markdown plan in distribution chain &V3& &V4& on the database.

System Response
Processing of the markdown is not possible. No changes are written tothe database.

Procedure
To avoid inconsistencies, processing of the markdown plan must be doneon the basis of the current data on the database.
Read the current data from the database using method"PriceMarkdownPlan.GetDetail" and repeat processing with the currentdata.