Vodafone Idea — Unable to send port message

Address:	Vodafone Idea Limited (formerly Idea Cellular Limited), An Aditya Birla Group & Vodafone partnership, Birla Centurion, 10th Floor, Plot No. 794, B W
Website:	www.myvi.in

I tried several times to send a port message to 1900. it gets failed every time. can you please help me to resolve the issue