Derive Funds Center against WBS Element

Dear Experts,

I person a request to deduce Funds Center connected the ground of WBS Element successful t-code CJ20N. There is nary Network enactment assigned to WBS.

I person already defined the Function Module FMDT_READ_MD_WBS_ELEMENT wherever Source tract POSID = WBS_ELEMENT and Target Field POSID = FUND_CENTER. I person besides defined a derivation regularisation for WBS Element = Funds Center with respective values.

I person already activated the FM Trace but successful CJ20N erstwhile one click connected prevention fastener past hint model does not look truthful I americium not definite if derivation strategy is moving oregon not. 

Please usher however to resoluteness this issue.

Regards,