Merchant Id is blank and hence Amount Only flag is grayed out in eProcurement

Hi,

We are on 9.2 and we using Punchout for DirectConnect. When we do Create Requistion > Add Items and Services > Web Tab, we are able to select the non-catalog items and add the items to PeopleSoft eProcurement but when we click the Line Details, PV_REQ_LNS_DTLS page is opened with the Amount Only field is grayed(display only) even when we change the Physical Nature as "Services", this field is grayed out.

From my analysis,

I see the peoplecode PV_REQ_LINE_WRK.GOTO_LINE_DTLS.FieldChange, under the function pv_req_ln_dtls()

For &I = 1 To &RS_EXT_XREF.ActiveRowCount;