How to deal with custom columns?

[Tarak]

I am trying to capture & collaborate Jira Issues across all projects, but when we are co-relating with custom fields the back-end id is varying Board to Board and Project to Project. 

Is there any way to deal with custom fields in Jira and make their IDs common across the projects? 

[Bill Sheboy]

Hi @Tarak -- Welcome to the Atlassian Community!

For company-managed projects (CMP), the custom fields are defined globally and shared and so use the same ID.  However for team-managed projects (TMP), each one has it's own instances of fields created within that scope; so the same named field in two different TMPs will have different custom field identifiers.

Best regards,
Bill