In contrast to code list mapping and the maintenance of code lists, which both belong to the system configuration (Business Configuration / Fine Tuning), ID mapping relates to business object instances, such as sales organizations, business partners, products, sales quotes, and so on.
However, the idea of ID mapping is similar to code list mapping: When exchanging business objects with other solutions, it is assumed that they have a different ID in the other solution. ID Mapping stores these IDs, which are from the perspective of SAP Sales and Service Cloud External IDs, while local IDs are also referred to as Internal IDs. An external ID always belongs to a communication system.
All integration-relevant objects need an external ID. When an object is replicated from an external system, it gets an internal ID assigned and the ID mapping with the external ID is written automatically, for instance, business partners or products.
In case exchanged messages reference objects that have not been replicated but created locally in SAP Sales and Service Cloud, the ID mapping needs to be maintained manually. Typical examples for this case are Sales Organizations and Product Hierarchy/Categories.
ID Mappings can also be mass-maintained with the help of Microsoft Excel.
The following video demonstrates the procedure of maintaining ID mapping entries using Product Categories as an example.