After running of MRP for Manufactured item, Production Order reference is shown in table timrp010. Where from this reference is piched ?
it is not from sfc
Can somebody help?

check order type in timrp010 if it is is a produdtion order then yes it is coming from sfc but it can also be a planned mrp production order so comes from timrp020 or a planned mps prod order timps520 etc.