Thanks very much MaryLandT for you fast response. Checked, verified and rebuilt but no change. I got it working in the end but cannot understand why. I can only assume it was a glitch unless you have any thoughts. Here is what I did to get it to work.
Edit Customer > Account settings >>> This screen has 3 drop down boxes and underneath that 'Clear All'. Boxes were clear but 'Clear All' wasn't greyed out. So, I clicked on 'Clear All' and everything worked as expected.
Just in case it helps someone.
Thanks for giving us an update, @prav.
Clicking the Clear All button is a way of tagging and refreshing the lists in your QuickBooks. If running the Verify and Rebuild tool gives the same result, the next recommendation is re-sorting the lists.
I'm glad to know that it worked for you and you're back on track! We hope some other affected users will get to see your suggested troubleshooting steps.
Keep me posted if you have other QuickBooks concerns or questions. I'm always here to provide assistance.