Map Tag-based service candidate to existing Application Service

[marcguegueniat]

Hello,

I'm implementing tag-based Service Mapping.

However the CMDB already have some Application Services.

Ans some Application Service do correspond to "about-to-be-discovered" tag-based services.

When I click on "Map Selected", ServiceNow refuses to map the candidate because a service with the name already exist.

I thought of 2 options:

- Make Service Mapping reuse and update the existing Application Service to a Tag-based service

- Modify the Application Service name so that Service Mapping can map the selected candidate
   And then have a procedure to merge the existing Application Service with the newly created Tag-based Application Service

Would anybody have an idea about that?

Regards,

[marcguegueniat · Accepted solution]

Answering myself here, in case it helps anyone

This is actually not so hard.
The trick is to not start with the candidates list, but with the Application Service.

- Open the existing Application Service
Make sure to open it with the 3 steps wizard view, not the legacy form

(like in create Application Service )
- Got to step 2

- Click choose a method
- Select Tags
- Fill in relative data
- Click Save
- Click Update

=> this transforms the Application service (cmdb_ci_service_auto) into a Tag-based Application Service (cmdb_ci_service_by_tags).

Attention: this is not reversible, you can not swich it bas to cmdb_ci_service_auto

Regards,

[avivs]

I don't see the "Tags" option - any idea?

[marcguegueniat]

Hello,

Probably Service Mapping is not yet installed ?

Regards

[avivs]

Service Mapping is installed.

The issue was that the app service was on cmdb_ci_service_discovered. 

After changed the class to - cmdb_ci_service_auto,
the "Tags" option is available on the CSDM wizard