## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# Can a bill number be repeated in Zoho Books?

A bill number once entered, cannot be repeated in Zoho Books except the following two cases:

**Case 1**\- You have multiple vendors and a few of them might be following a similar series. Let’s say Vendor A and B have their bill number series as Bill-1, Bill-2, and so on. There are chances where you might have received bills with the same number from them. In such cases, Zoho Books lets you enter a bill number twice if they are from two different vendors.  

**Case 2**\- Your vendor repeats his bill number series every financial year. So, if you happen to receive a bill this year, you will be able to record another bill with the same number, from the same vendor in the next financial year only.