SAP Message RU466 - Operation & in sequence & cannot be confirmed by progress confirmation

Diagnosis
The selected operation &V1& in sequence &V2& was already automaticallyfinally confirmed. This happened when a following operation wasmanually confirmed by means of a progress confirmation. No furtherprogress confirmation may take place for the operation selected.

Procedure
Check the previous progress confirmation. If necessary, correct thequantity or the confirmation status.