While filling the Neet pg application form,after filling step 1

While filling the Neet pg application form,after filling step 1,when i go to proceed to next step after clicking “save and next” , it is showing " please enter valid govt of India issued voter id card number "…but it is my only voter id card number entered correctly… can’t understand why is this showing…tried several times since yesterday but same problem…can anybody help plz??

I have faced same issue. Put down valid voter id card no but showing that message.

Don’t leave a space b/w 1st 2 alphabet