Budget Exceeded Issue - Activated budget profile for existing project

Dear Experts,

I have a Project and not using any budget profile, already actual data exist only in CJI3 no data in CJI5.

Now I assigned Budget Profile in that project.

While entering Budget in T-code CJ30, I can see values in assigned values for a wbs elements.

Example -

WBS Element - XXXXXX-02  - 2000 (Assigned) - Here Budget Profile not assigned in the project

Same WBS Element - Once Budget Profile assigned, when am assigning same 2000 budget am getting budget exceeded issue.

If I give 2500 I am not getting any errors, My tolerance as only Warning message.

Please Suggest - Screenshot attached

Thanks,