SAP Message RS_SOBI_DT022 - &1 field cannot be mapped to &2 key figure automatically

Diagnosis The system cannot automatically generate a transfer rule between fieldV1 and key figure v2 because the standard domains are of differentlengths or the data types for key figures are inconsistent. System Response No transfer rule is generated. Procedure Create a transfer rule between field &V1& and key figure &V2& manually.You do this in the object maintenance for InfoSource &V3&.