Thanks Naveen the customization you sent me worked out 

public class SOOrderEntryExt : PXGraphExtension<SOOrderEntry>
        {
            protected virtual void SOLine_RowSelected(PXCache cache, PXRowSelectedEventArgs e, PXRowSelected InvokeBaseHandler)
            {
                InvokeBaseHandler?.Invoke(cache, e);
                SOLine row = e.Row as SOLine;
                if (row != null)
                {
                    PXUIFieldAttribute.SetEnabled<SOLine.curyUnitPrice>(cache, row, false);
                }
            }
        }

@jenniferflores43  You can also achieve this by configuring the Automation Steps for required  Step ID (Without any code). Please find the screenshot for reference.

 

Sure @jenniferflores43 

Thank you very much Naveen for your prompt response. I'm going to try and let you know how it looks. 

@jenniferflores43 You can use the below customization to make it a read-only field.

public class SOOrderEntryExt : PXGraphExtension<SOOrderEntry>
        {
            protected virtual void SOLine_RowSelected(PXCache cache, PXRowSelectedEventArgs e, PXRowSelected InvokeBaseHandler)
            {
                InvokeBaseHandler?.Invoke(cache, e);
                SOLine row = e.Row as SOLine;
                if (row != null)
                {
                    PXUIFieldAttribute.SetEnabled<SOLine.curyUnitPrice>(cache, row, false);
                }
            }
        }

Hello Naveen,

Yes, I do. 

I want to make the Unit Price field to Read-Only/Non Editable field.

Hi @jenniferflores43,

Do you want to make the Unit Price field to Read-Only/Non Editable field?