Please see reply back from CBS GPS team. As I talked with support team, they advise us to use IR-Based IV instead of GR-Based IV. For this, I have a quick chat with P'jane and seems we might have to set meeting to discuss this issue for some day. Let's book a room. For an interim solution, please ask APSS (Manoj or Sridhar) to manually release invoice block using MRBR.