Remove Quantity and unit selling price as mandatory filed from Transaction lines on invoice creation

Summary: How to exclude quantity as mandatory filed on invoice creation page for service industry users.

Content (please ensure you mask any confidential information): as per requirement of service industry there is no need of quantity and per unit selling price for invoice creation. Hence it is not required, the requirement is to only enter the amount/value of services given such as insurance commission or Professional Fees from customer etc.

Version (include the version you are using, if applicable): Oracle Receivables Fusion Cloud

Code Snippet (add any code snippets that support your topic, if applicable):