Rest API STK-SHP Erp_BO_IssueReturnSvcClien/PerformMaterialMovement

Hello I am trying to automate the picking of customer orders, by following the trace I can see that Epicor uses this function, for the moment it works and the program creates the transactions for me but I note that the quantity required in the MaterialQueue does not decrease no, is it another function or a very specific parameter To decrease the required Qty?