I am working on sales order page. I wanted that when I will post the sales order then I wanted to make my custom field non-editable. So, nobody can't change after posting sales order. Any help would be appreciable. Thank You
After Posting the Sales Order, the sales order gets deleted, are you referring to partial postings? if so create a boolean variable and set that value to true or false based on if there are postings on the sales order or not and assign that boolean to the Editable Property of the field on the Page.
For Example: Check the Ship-to Code field on the Sales Order Page