Not able to add NSX license in VSphere 6.7

Hi All,

I am trying to add NSX license in vSphere 6.7 and facing issue “serial keys are not valid”.

I am using default administrator user which is a part of License administrators group.

Same license works perfectly on another vCenter running the same version.

I have tried to use both HTML and Flex clients. Could anyone help please. I am having hard time fixing this.

Raghav