Do you mean, Sale ID?

Hello,

The sale number is the `sma_sales` table AI. If you have sales, you can't reset it. Otherwise feel free to update your database table as you need.

Thank you

I have no sales, sma_sales is empty but when I make a sale the invoice number starts from 72

Hello,

**_Table `AI` won't be reset if you delete records._**

You will need to reset it manually on your table. _This isn't anything that is related to SMA but your database._ You can reset it as you like. There could be multiple way to doing this, delete table and creating it again or truncate it or alter to update.

```sql
ALTER TABLE `sma_sales` AUTO_INCREMENT = 1;
```

OR truncate table

```sql
TRUNCATE TABLE `sma_sales`;
```
Thank you