Can we freeze the DFFs (Header and Line level ) in an AR Invoice after its completed and accounted

Summary:

In case of requirement where we have Line Level Context Sensitive DFFs in a AR Invoice ( RA_INTERFACE_LINES and RA_CUSTOMER_TRX_LINES ) These DFFs have to be editable when create an Invoice from UI and once completed it must be Frozen. Right now, the DFFs are editable even when the Invoice is in completed and accounted status. Same in case of Imported invoices as well.

One way to go about it is to make the DFFs Read Only, but this will prevent using the DFFs from the UI while creating a invoice.

There is an old Oracle Note that says that the DFFs will be editable even after the invoice is completed, please find link below. This is intended behavior, but if anyone in the community knows if there is any update to this, sharing it here will be helpful.