We want that while PP order or material issue user should select the serial no. from avaliable no. only for this in serial no. profile i have seelct the check box Existence Requirement in OIS2, due to this now automatic creation of serial no. tab is disable now i am facing on problem that I have one material with avaliable serail no. 10001, i have issue the material with this serial no. 10001, but again when i am issueing same material i select the no. 10001 and system is not giving any error also the status of serial no.. 10001 is still ECUS AVLB so how to make the serial no. as used and it should not be allow again to enter while issue,
Also for some material we have many srial number avalable how to deactivate all the no.