SAP Message WRF_AT114 - Follow-on docs already exist for recipients for alloc. table &1, item &2

Diagnosis
Subsequent documents already exist for allocation table &V1&, item &V2&for the recipient.
Subsequent documents exist, for example, when stock transfer orders havealready been created or when a third-party purchase order is involved.

System Response
The system does not synchronize between allocation table &V1& andpurchase order &V3&.