SAP Message AJ509 - In gas procedure &1 the VCF is missing from the VCF procedure &2

Diagnosis The gas procedure you have selected refers to avolume correction factor procedure that was entered.This means that the volume correction factor is to be determined usingthe Reg. VCF procedure. However, the number value you entered in the volume correctionfactor field is zero. Procedure Enter a valid volume correction factor value.