I'm not sure if QB Online Global version has a different policy regarding maximum amounts allowed compared  QB Online US version (20 digits).

https://quickbooks.intuit.com/learn-support/en-us/help-article/printing-preferences/character-limita...

Try opening your QBO account on any private/incognito browser to be sure. If the same error persists, QB Online Global version is not suitable for your company. Switching QBO US version is not recommended due to current issues with the new location-based tax feature. You may consider switching to QB Desktop US version (Pro or Premier edition) instead. It allowed to manage up to IDR 9.999.999.999.999,99 (15 digits)