ID Mapping 

Definition

Assignment of keys in one system to keys in another system.

Use

You can use the ID Mapping when different systems are involved in a business process, and have different keys for equivalent objects. Data must be modelled so that, for example, postings can be copied correctly from SAP R/3 into an SAP CRM. The ID Mappings allow the IDs to be related when messages are exchanged between the systems.

Integration

Differentiation from Customizing Distribution and Synchronization Objects

ID Mappings assign keys to each other. Synchronization object definitions in the Customizing Distribution only map structures.

Do not combine Customizing Distribution and the Customizing ID Mapping Framework for a customizing object and its system. This can cause data inconsistencies. Customizing Distribution and the Customizing ID Mapping Framework are both components of the SAP Solution Manager, but they are not integrated with each other. You can either distribute a customizing object between two systems with the Customizing Distribution, or set-up ID mapping.

Example

You define the ID type Marital Status, to describe the structure of the IDs which contain marital statuses.

System AAA, ID type: Marital status

Key/ID	Text
01	Single
02	Married
03	Widowed
04	Divorced
...	...

System BBB, ID type: Marital status

Key/ID	Text
S	Single
M	Married
W	Widowed
D	Divorced
...	...

Use this ID type to define the following ID Mappings:

ID Mapping for ID type Marital status

System AAA	System BBB
01	S
02	M
03	W
04	D