SAP Message WRF_BW_EXTRACTION001 - Information missing in &1, field &2 for document &3, item &4!

Diagnosis
BADI implementation: Explosion of structured materials
The document information in document &V3&, item &V4& in the data sourceV1 is not complete for the explosion of structured materials. thefield &V2& does not contain a value.

System Response
This system does not read this document item.