SAP Message /BEV1/SR_MESSAGE155 - Difference between order entry &1 and empties credit memo &2

Diagnosis
A difference regarding the items was found between the order entry andthe order for the empties credit memo. The difference may be differentmaterial numbers, quanities or different units of measure. Furthersettlement of the sales returns is not possible before the emptiescredit memo is adjusted.

Procedure
If a billing document has already been generated, cancel the emptiescredit memo.
Adjust the order for the empties credit memo to the effect that theitems of the empties credit memo are identical with the EMPTIES items(sub-items) of the sales returns order entry regarding the material,quantity and unit of measure.
Save the order for the empties credit memo.