Customizing: Sales Order 
The workflow basic settings for error handling must be maintained (transaction SWU3).
You must assign the EDI pricing conditions JED1 and JED2 to the pricing procedure of the respective document type of the sales area. These pricing conditions serve to transfer the expected customer price / customer value to the sales document.
You must maintain the translation of EDI internal item categories into SD item categories in Customizing (transaction code VOE1) in the table EDPST (see also notes for the documentation for segment E1EDP01, Field PSTYP).
IMG: Sales and Distribution ®
Electronic Data Interchange ®
EDI Messages ®
Convert SAP Item Category to IDoc Item Category.
Using the table EDPAR, you can convert external partner numbers into internal partner numbers as needed. Maintain the table using transaction VOE4. Read also the notes in the documentation for the segments E1EDKA1 and E1EDPA1.
IMG: Sales and Distribution ®
Electronic Data Interchange ®
EDI Messages ®
Configure EDI Partners ®
Convert External to Internal Partner Numbers.
You can control the determination of the sales area data (sales organization, distribution channel, division) with the table EDSDC. Since an EDI partner will only rarely transmit this data (see notes for the documentation on segment E1EDK14), the sales area can be determined for the transfer to the application depending on the customer and vendor number. To do this call the transaction VOE2.
IMG: Sales and Distribution ®
Electronic Data Interchange ®
EDI Messages ®
Configure EDI Partners ®
Assign Customer/Vendor To Sales Organization Data.