SAP Message AQV156 - Check your sequence specifications

Diagnosis
When you defined the basic list, statistics or a ranking list, youdefined the output of the individual fields in an order that is notclear.
The following rules are:
If you want to output a field in a basic list, you must always assignthe field a line number and sequence number. This is also true if onlyone field is to be output in a line. Fields to be output on a line(same line number) must have different seqeuence numbers.
If you want to output a field in statistics or in a ranking list, youhave to assign the field a seqeunce number. The sequence numbers mustall be different.

Procedure
Assign these line and sequence numbers that clearly define the order ofthe fields.