# Do not allow Bill saving without Patient and Doctor Details for items in Marked Groups at Level
**YouTube:** [How to Enforce Doctor and Patient Selection for Schedule H Prescription Items in Sale Bill?](https://www.youtube.com/watch?v=QsPNUEWXLfU)
## How to Enforce Doctor and Patient Selection for Schedule H Prescription Items in Sale Bill?
This tutorial demonstrates how to configure Logic ERP to **restrict bill saving** if **Patient** and **Doctor details** are missing for items that belong to special or prescription-required categories.
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### **Enable the Setting in Logic Admin**
* Open the **Logic** installation folder.
* Run **Logic Admin**.
* Navigate to **Global Settings**.
* Go to the **Sales Settings Three** tab.
* Find the option: **“Do not allow bill saving without Patient and Doctor Details for items in marked groups at level:”**
* From the dropdown menu, **select the relevant item group level**.
* Enable the checkbox and click **Save**.
* Restart the Logic ERP software to apply the new configuration.
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### **Implement the Functionality in Sales Voucher**
* Open Logic ERP and begin creating a **Sales Voucher**.
* Skip entering **Patient** and **Doctor details and** proceed to add item(s).
* When you try to **save the voucher**, the system will display:
* **“Patient name cannot be left blank”**
* **“Doctor name cannot be left blank”**
* This validation is triggered **only for items** that belong to marked item groups requiring prescriptions.
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### **Mark Item Groups for Validation**
* Navigate to **Setup/Setup Items** then click on **Setup Item Group**.
* Create a new group or **edit an existing one** that includes regulated or prescription items.
* In the item group window, locate the column for **Patient & Doctor validation**.
* Mark **“Yes”** to enforce this validation for all items under this group.
* Save the changes.
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### **Summary**
Enabling this feature ensures that **medical or prescription-based items** are not billed without the necessary **Patient and Doctor information**. It helps in maintaining regulatory compliance and preventing unauthorized sales.
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