Suggestion:
System has a provision for purchange enquiry after saving a Purchase indent of the same item.
For Enquiry goto SCM->Purchase->Enquiry
User has to enter enquiry date, Item series, indent number, required quantity,require date and supplier name to save the record.
Purchase enquire can be done only against an approved Purchase indent line item.
If in Supplier Item, Sent Purchase enquire is set as Yes for an item, only that item can be used in enquire.
A confirmed enquiry can be used in Purchase order