How to identify the custom field for the link from a different project?

[Kevin Williams]

I have a Power BI report where I am bringing in custom fields from Enterprise JIRA and WIM JIRA, but I need to produce the field for the "related to" link that joins the 2 separate projects. How can I find the custom field or what is the custom field number?

[Sachin Dhamale]

@Kevin Williams ,

Basically In jira "Linked Issue" Default jira custom field is used for linking purpose.

But its different kind of field. Its not appear in the custom field section.

There is different issue linking section/page is there to manage the link types which populate links type in the custom field

https://developer.atlassian.com/server/jira/platform/database-schema/

refer this to get the tables where this information get store

Accept the answer if it helps