> For the complete documentation index, see [llms.txt](https://docs.rmhpos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rmhpos.com/store-manager/configure-pos-and-store-manager/accounts-receivable/setting-up-a-number-series.md). # Number series Use number series if you want Store Manager to automatically generate AR account numbers that follow a specific format and numbering sequence. For example, you might create a unique number series for each account group. Setting up an account series is optional. You can enter AR account numbers manually if you prefer. 1. Click **Setup**. 2. Expand **Customer**. 3. Expand **Account Receivables**. 4. Click **Number Series**. 5. Do one of the following: * To add a new number series, click **New**. * To edit an existing number series, select it and click **Edit**. * To copy an existing number series, select it and click **Copy**. 6. Enter information about the number series.
FieldDescription
CodeA code that identifies the number series.
NameThe name of the number series.
InactiveSelect this option to deactivate the number series.
PrefixThe prefix for the number series, if applicable.
No. of DigitThe required length of the account number, e.g., 4 would mean the account number must be 4 digits long or 0001.
Last UsedThe starting point for account number series, e.g., if you enter 1 the next account number in the series will be 2.
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