This feature appears to be beneficial to your company. I'm here to help you figure out how to submit feedback on this QuickBooks product feature.
The sequential number is used as a tracking number to assist your company or client on how to recover receipts and track their progress. Although, creating a credit note without the control number is unavailable in QuickBooks Online, we can send a product suggestion directly to our developers.
Furthermore, entering a credit is determined by how you record your purchases. Choose the portion that refers to you from the list below. If you're unsure, consult with your accountant. Visit this article for your guide: Handle supplier credits and refunds in QuickBooks Online.