Hello Gourav,
In my opinion first of all you have to delete the resource on APO side. Then resend again the resource as initial transfer in APO. If still is single you can also use the button APO RESOURCE in ECC at resouce level, tab capacity. There you can choose your type of work center (single mixt, multi mixt, etc.).
You could have issue to delete the work center. If the work center is used in PDS you have to delete them too. Also to delete PDS you have to delete all orders created and assgned to them.
At the end you send again all stuff again in APO through the CIF. First work center and then PDS.
Thanks,
Regards, Marius