Editing Mappings on a Messaging Relationship

You can add a custom mapping that contains a unique target field, or for child relationship mappings, a unique target field and target child type. If a managed mapping exists with the same information, the custom mapping overrides it. From Winter 2022, the combination of these fields and the mapping condition must be unique.

Note:

We recommend that you do not create mappings for fields that are specified as an identifier reference on the target:

• To view the identifier reference on a declarative relationship, click Manage Relationship.
• To view the identifier reference on a custom child relationship mapping, click next to the relevant relationship mapping and click Edit.

To edit mappings on a relationship:

1. On the Message Types tab, click the name of the message type that contains the relationship you want to edit mappings for.
2. In the Relationship & Mapping Details section, click Manage Relationship and select the publication and subscription that make up the relationship.
3. To make changes to an existing mapping, click and click Edit. The following rules apply when editing a mapping:
   • You can only make changes to custom mappings, but you can override a managed mapping.
   • You cannot make changes to a message key, but you can change source and target details associated with the key.
   • For mappings with a source type of Parent, you can change the target details or the source type, but not the source itself. To change the source to a different parent, we recommend that you delete the mapping and create a new one.
4. Click Save.