SAP Message UPB168 - No reference row is specified in row &1 of key figure scheme

Diagnosis
In the key figure scheme, you have defined a step as relative orcalculating totals. However, you have not entered which othercalculation steps the current step refers to.

System Response
You can only continue processing when you have made the necessaryentries.

Procedure
In the columns From or To, enter one or several of theprevious steps which should be included in the calculation of thevaluation element of the current step.