SAP Message CAVE006 - Item &1 (document &2) was changed after APO backorder processing

Diagnosis Item &v1& (document &v2&) was changed following the APO backorderprocessing. After the backorder processing has been carried out in APO and beforethe result could be updated in R/3, the relevant item is changed in R/3.For this reason, the result for this item is not transferred into R/3.