[A] If you are facing cost Break-up error in extension while integrating invoice to tally, open the tally.
[B] In Gateway Of Tally click on F11: Features >> Accounting Features
[C] Now select Yes in all the options of Cost/Profit Centers Management as shown below and save it.
[D] Now refresh the page in extension and integrate the invoices to tally.
Keywords- cost break up error, error in extension