IS THER ANY MAKER CHEKER CONCEPT WHILE POSTING THE ENTRY

Hi there, sp_saisaran2003!

QuickBooks Online has a built-in checker. You'll see an error or pop-up message if the system detected that there's something strange or mistake in your transactions including journal entry.

Also, you'll want to check the Apps tab and see if there's a third-party app that has a similar feature. Lastly, it's best to invite your accountant to review your accounting in QuickBooks Online.

Post again here if you need anything else. Take care!