EDI、IDoc、RFC、PMI概念

EDI是电子数据交换，是联合国标准化组织的一种通用的数据交换标准

IDOC是中介文档，是符合EDI标准的一种的数据格式，它一般是整个的消息报文，包含了事务数据、主数据、控制数据，用以控制数据的整个交换流程，其中呢，主数据一般是XML格式，所以我们可以方便解析。

RFC是远程函数调用，在SAP中是基于TCP协议来实现的，实际上是一种底层通信技术

PMI是进程监视架构，配置好后，用以监视接口数据的进出站。

所以呢，以上这些名词，一般都是用来做接口时候用到的，RFC作为接口，是需要编写RFC客户端来建立与SAP主机通信的；IDOC其实是建立在RFC基础之上，大多的数据接口都可以通过配置完成，而且与第三方系统集成时可以使用XML来传输数据，比较方便。

EDI主要用于公司之间的数据交换。 例如：在SAP下销售订单处理期间，可通过EDI接口发送和接收各式各样的输出。

IDoc是一种信息系统之间(通常是ERP)进行事务性或数据交换使用的标准数据格式，其中比较公认的是符合EDI标准的IDoc。

IDoc是SAP接口功能中主要的组成部分，是一个依赖IDOC type的数据实例。

IDoc结构是SAP系统的标准，它由三部分组成。

Control Record： 控制记录字段的内容。可以认为是文件头，它包含发送和接收端，IDOC ID，发送日期等信息，当IDoc出被触发时，SAP会首先检查这些信息是否正确。

Data Record : 装载传输的数据。当发送或接收这些IDoc时，数据将会被解析到特定的数据段中。

Status Record： 用来记录IDoc从发送方到接收方的历史状态信息。

Outbound IDOC status codes with status description.

• 01: IDoc generated
• 02: Error passing data to port (It’s an error status)
• 03: Data passed to port OK
• 04: Error within control information of EDI subsystem
• 05: Error in translation
• 06: Translation successful.
• 07: Error on syntax check (It’s an error status)
• 08: Syntax check successful
• 09: Error on interchange handling (It’s an error status)
• 10: Interchange handling successful
• 11: Error on dispatch (It’s an error status)
• 12: IDOC Dispatch successful
• 13: Retransmission successful
• 14: Interchange Acknowledgement positive
• 15: Interchange Acknowledgement negative (It’s an error status)
• 16: Functional Acknowledgement positive
• 17: Functional Acknowledgement negative (It’s a warning error status)
• 18: Triggering EDI subsystem successful
• 19: Data transfer for test successful
• 20: Error on triggering EDI subsystem (It’s an error status)
• 21: Error on passing data for test (It’s an error status)
• 22: Dispatch successful, acknowledgement still due
• 23: Error on retransmission (It’s an error status)
• 24: Control information of EDI subsystem successful
• 25: Processing despite syntax error (It’s a warning error)
• 26: Error during syntax check of IDoc (It’s an error status)
• 27: Error in ALE dispatch level (It’s an error status)
• 29: Error in ALE service (It’s an error status)
• 30: IDoc is ready for dispatch in ALE service
• 31: IDOC is marked for deletion.
• 32: IDoc was edited
• 33: Original of an IDoc which was edited
• 34: Error in control record of IDoc (It’s an error status)
• 35: IDoc reloaded from archive
• 36: Timeout error on Electronic signature not performed (It’s an error status)
• 37: IDoc added incorrectly (It’s an error status)
• 38: IDoc archived
• 39: Arrival of IDOC in target system confirmed
• 40: Application document not created in target system (It’s an error status)
• 41: Application document created in target system

Inbound IDOC status codes with status description.

• 42: IDoc was created by test transaction
• 50: IDoc added
• 51: Application document not posted (It’s an error status)
• 52: Application document partially posted (It’s an error status)
• 53: Application document posted successfully.
• 54: Error during formal application check (It’s an error status)
• 55: Formal application check successful
• 56: IDoc with errors added (It’s an error status)
• 57: Test IDoc: Error during application check (It’s an error status)
• 60: Syntax error on IDOC (It’s an error status)
• 61: Processing despite syntax error (It’s a warning error status)
• 62: IDoc passed to application
• 63: Error passing IDoc to application (It’s an error status)
• 64: IDoc ready to be transferred to application
• 65: Error in ALE service (It’s an error status)
• 66: IDoc is waiting for predecessor IDoc in serialization process
• 68: IDOC is marked for deletion.
• 69: IDoc was edited
• 70: Original of an IDoc which was edited
• 71: IDoc reloaded from archive
• 73: IDoc archived
• 74: IDoc was created by test transaction

Simple Steps:
Step 1. Create Package(ZAPPLE): SE21
Step 2: Create Segment: WE31
Step 3: Create IDoc Type: WE30
Step 4: Create Message Type: WE81
Step 5:   Assign Output/Message Type to IDoc Type: WE82
Step 6: Creare RFC Destination: SM59
Step 7: Create Processing Port: WE21
Step 8: Logical Systems:SALE
[Outbound Configure]
Step 9: Add Outbound Partner profile: WE20
Step 10: Test IDoc using ABAP: SE38
[Inbound Configure]
Step 11: Creare Inbound Process Function Module: SE37
Step 12: Sign Inbound Processing Function: BD51
Step 13: Assign Function Module to IDoc Type and Message Type: WE57
Step 14: Create Inbound Process Code: WE42
Step 15: Add Inbound Partner profile: WE20