Itc of rcm of igst paid on gta

Dear sir,

I am a registered dealer under GST in A.P. I have availed transportation  services through registered transporter from Gujarath and he gave the Reverse charge Invoice by charging zero tax and uploaded the same in gstr1 and the same is visible in gstr2. Asper sec 9(3) gst is to be paid by the receiver under RCM accordingly i paid IGST by raising self invoice. Now if i add this self invoice in GSTR2 under 4a it is not allowing me to take this as elgible ITC, the option is getting disabled. So i request you to explain how to take credit of igst paid on gta supplied by a registered transporter. 

with Regards,

M.V.RAMALINGESWARA RAO