HI Siva,
Thanks for the response.
As you have mentioned, the customer didn't receive the earlier update V2C thus creating a new update V2C on customer's C2V will throw this error. This is because the state of customer's license is not synchronized with licensing database.
We need to check-in the current C2V from user and get the pending V2C. After this, the pending V2C needs to be applied to on users machine and then we can generate further updates.
However, if you don't wan't to apply the previous update then we can simply remove the update after check-in C2V as well.
Please check the below web-article for your reference :
Thanks & Regards,
Parth