# Do not allow modification of Approved Documents
**YouTube:** [How to Prevent Modification of Approved Documents?](https://www.youtube.com/watch?v=2uo_I68wp8g)
## How to Prevent Modification of Approved Documents?
In this tutorial, we’ll walk you through how to **restrict the modification of approved documents** in **Logic ERP**, ensuring data integrity and controlled access.
***
### **Enable Restriction on Approved Document Modification**
* Open **Logic Admin** and navigate to **Global Settings**.
* Go to **Other** section and click to "User Rights Settings"
* Locate and enable the option labeled: **“Do Not Allow Modification of Approved Documents”**
Let's keep this feature enable to observe its impact in billing
* Save the settings.
* Restart the software for the changes to take effect.
***
### **Approve a Document**
* Navigate to Logic Icon/ Common Programs and then click to **"My Messages"**.
* Locate a pending entry and **right-click** on it.
* Choose the **Approve** option to finalize the entry.
Use the Illustration Above to Approve the Entry
> Once approved, the entry becomes **non-editable**.
***
### **Attempt to Modify an Approved Entry**
* Go to the **Bank Payment Entry** window.
* Select a document that was **previously approved**.
* Try to **change the amount** or any other field.
* Click **Save**.
System Restriction: Approved Voucher Is Locked for Editing
> The system will display an error message:
>
> *“This entry has already been approved and cannot be modified.”*
***
### **Conclusion**
Enabling this feature in Logic ERP helps enforce strict control over financial and operational records by **locking approved documents**, preventing unauthorized or accidental changes.
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