---
title: "1040 - Invalid Check Number when Printing"
canonical: "https://support.crosslinktax.com/space/CSC/1869287275/1040%20-%20Invalid%20Check%20Number%20when%20Printing"
format: markdown
---
> ℹ️ Users will receive an error message stating **Invalid Check Number** if the starting or ending number, that was entered in the program, is incorrect or missing or if the check number entered is not within the check range activated in the software.
**Follow the instructions below to successfully print a valid check:**
1. Click **Checks, Registers and Activation **on the **Work In Progress Summary** page (**WIP**).
2. Click the **Check Inventory** tab.
3. **If there is nothing listed here, **then click here to create an activation: **[1040 - Activating Checks.](https://crosslinktax.atlassian.net/wiki/spaces/CSC/pages/1869284075)**
4. Select **Edit.**
5. Edit the **Starting Check Number** or **Ending Check Number** to include the check number that triggered the error message. Alternatively, you can create a new activation by selecting **Activate **instead of **Edit. **This will create another line item on this tab.** For more details, please see** **[1040 - Activating Checks](https://crosslinktax.atlassian.net/wiki/spaces/CSC/pages/1869284075)**.
6. If you are activating check stock for multiple offices, type the applicable **Site ID**.
7. Enter the appropriate **Check Layout** (if **TPG **is the selected Bank).
8. Click **OK** to confirm changes. The new check range is now visible on the Check Inventory tab.
> 📝 *These activations, can be edited at any time with the ****Edit ****button.*