Oracle Fusion - How to Turn Charge Account to Be Read Only
After activating sandbox, navigate to Edit Charge Account KffComponent. Click on down arrow near Read Only text field and click on expression builder.

Remove the existing Expression.

Enter true as value and click on Test button followed by Ok button.

Read Only field shows as checked.

Click on Apply button. Read only field flips back to original expression. Continue by clicking Ok button.

Click Close on top right corner.

Chargeback should now be a read only field. Go ahead and publish the sandbox.
