Hi ..
The information on Z-Files is available in the Interoperability Implementation Guides. A gist of it is given below :
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Understanding Inbound Interoperability for Procurement
In an inbound transaction, you accept data from another system into this system.
Inbound Purchase Orders
You might receive inbound purchase orders, for example, if you are using a third-party manufacturing system
and need to create a purchase order in Procurement software. In this example, the manufacturing system
maps the data to a flat file.
The Inbound Flat File Conversion program (R47002C) copies the data from a flat file to the Purchase Order
Header Unedited Transaction Table (F4301Z1) and the Purchase Order Detail Unedited Transaction Table
(F4311Z1) if you have set up a flat file cross-reference to these tables.
Note. The system provides transaction type JDEPOIN for inbound purchase order transactions.
You run the Inbound Purchase Order program (R4311Z1I) to copy the information from these unedited
transaction tables to the Purchase Order Header table (F4301) and the Purchase Order Detail File table (F4311).
Review of Receiving Advice Edit/Create
The Receiving Advice document is a confirmation from the customer or off-site consigned warehouse to the
supplier that the goods or services were received. This document includes the condition of the received items
and customer’s acceptance or rejection of the received items.
When a supplier sends you receiving advice documents, the translator software maps the data into a flat file,
and the Inbound Flat File Conversion program copies it to the EDI Receiving Advice Header - Inbound
table (F47071) and the EDI Receiving Advice Detail - Inbound table (F47072) if you have set up a flat file
cross-reference to these tables.
