SAP Message BEA_R1100 - Preceding document &1 not updated; item &2: error for block

Diagnosis
Document &V1&, item &V2&, condition step number &V3&, counter &V4& couldnot be transferred into the rebate due list for rebate processingbecause the corresponding record was locked. Possible reasons:
Agreement &V5& is currently being settled.
The settlement record is currently being processed or created by anotherextract.

System Response
Processing of the extract is canceled.

Procedure
The extract can be postprocessed as soon as the lock is lifted.