Thanks again Wendy.
2) EKKO_Statu for :
a) Source of supply assigned in ECC and transferred to SRM - PO created in backend automatically has EKKO_STATU = 'K', Doc type = NB
b) Source of supply not assigned in ECC and transferred to SRM - SC appearing in Purchaser's worklist. After converting SC into PO, backend PO replication with EKKO_STATU = '9' and Doc type = ZEC.
I am still not much clear on why SC without source assigned is seen in Purchaser's worklist and the other one is not.
Rgds,
M