Scenario: 

When create Delivery Order some user will accidentally edited the debtor name, how to block or set the field that unable edit? 

Solution:

1) Go to Customization Centre, can refer below guidance

https://support.qne.com.my/support/solutions/articles/81000383848-how-to-access-customization-centre

2) Go to Model > Views

3) Scroll and search for DeliveryOrders_DetailView > Items > DebtorName 

4) At right hand side, go to AllowEdit and change to False > save 

5) Logout and login system again and check at Delivery Order Debtor Name, the field unable edit 

** Learn more about Azure Cloud

** Learn more about QNE Hybrid Cloud Software

Refer attachment for details