> For the complete documentation index, see [llms.txt](https://kb.logicerp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.logicerp.com/logic-erp-installation-configuration-and-troubleshooting-solutions/troubleshooting/sales/error-while-retrieving-or-modifying-bill-..md).

# Error While Retrieving or Modifying Bill .

**YouTube:** [ERROR WHILE RETRIEVING OR MODFIYING BILL](https://www.youtube.com/watch?v=aSTc8YH2EUk\&t=11s)

## ERROR WHILE RETRIEVING OR MODFIYING BILL

This tutorial demonstrates how to resolve the **"unexpected error while opening the last bill"** issue that may occur during bill retrieval or modification.

***

### Overview of the Issue

* The error occurs when attempting to retrieve or modify a previous bill in the **Sale Bill** window.
* This is typically caused by:
  * A **corrupt database**
  * **Improper system shutdown**

***

### Steps to Reproduce the Error

1. Navigate to the **Billing Menu** from the **Main Menu**.
2. Click on **Sale Bill**.
3. Press "**Alt + Insert"** to retrieve the previous bill.
4. Observe the error:

   > “Unexpected error while opening last bill”.

<figure><img src="/files/U4ZNELuLEdeaieY1TYws" alt=""><figcaption></figcaption></figure>

***

### How to Fix the Error

* **Close the Logic ERP software** completely.
* Go to the **Taskbar** and open **Logic Update Manager**.
* Click on the **Options** button.
* Select your company from the list.
* Click on **Run Database Patches** located at the bottom-right corner.

<figure><img src="/files/1t5vSCpvhw7gfUuCojMq" alt=""><figcaption></figcaption></figure>

* Wait for approximately **10–15 minutes** for the patch process to complete.
* A confirmation message will appear once the execution is done.
* Close the **Logic Update Manager**.
* Reopen **Logic ERP** and try retrieving the bill again.
* The bill should now be **retrieved successfully**, and the error will no longer appear.


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