Fba registration with apob

Hi Everyone,
I am a new seller in Amazon and opted for FBA. As per Amazon I need to upload my GST Certificate with APOB mentioned. I have updated the same in my GST Portal. The GST Office has raised the Clarification as mentioned below. Please let me know from where to get letter from Amazon Authority. Kindly help and advise.

" |Query Description|Query Response|
| — | — |
|Additional Places of your Business - F2MV+3RX, Orisha Trunk Road, Uluberia, 711316 - Document Upload - Others (Please specify) - Please Specify - UPLOAD ANY LEGAL AGRREMENT OR LEGAL INTIMATION LETTER FROM AMAZON AUTHORITY FOR NECESSARY VERIFICATION|