SAP R/3 can be interfaced with other systems using various techniques. EDI is one of them. For interfacing SAP R/3 with its partners (Vendors/Customers) the best way is using EDI. Please find below some of the important transaction codes used for IDOCs (intermediate document).
IDOC Monitoring
| Transaction Code | Description |
| WE02 | IDOC Display |
| WE05 | IDOC List |
| WE07 | IDOC Statistics |
| WE20 | Maintain Partner Profiles Manually |
| BD82 | Generate Partner Profiles Automatically |
| WE21 | Port Definitions |
| SM59 | RFC Destination |
| BD64 | Maintain Customer Model |
Message Control
| Transaction Code | Description |
| NACE | Maintain condition records for various applications |
| VOK2 | Message Control components for Sales and Distribution |
| VOK3 | Message Control components for Purchasing |
| VOFM | Maintain requirements for Message Control |
| V/86 | Field Catalog for condition Tables |
Important Menus
| Transaction Code | Description |
| WEDI | Main Menu for EDI related activities |
| BALE | Main menu for ALE related activities |
| SWLD | Main menu for workflow related activities |
| SALE | ALE Configuration |
| NACE | Message Control Configuration |
IDOCs
| Transaction Code | Description |
| WE31 | Segment Editor |
| WE30 | IDoc Editor to create and extend IDoc type |
| BD53 | Reduce IDoc Types for Master Data |
| WE60 | IDoc documentation (IDoc structure and segment definition) |
| WE61 | IDoc documentation (Control Record, data record, and Status Record) |
| WE19 | Test Tool fro IDOCs |
| WE12 | Convert an Outbound IDOC to an Inbound IDOC |
| WE16 | Process an incoming IDOC |
| WE17 | Process an incoming status file |
| BD87 | Manual processing of IDOCS |