Having problems with listing

I am a self publisher for my book and am trying hard to get this listed but it just doesn’t seem to work. Everytime this error occurs:-

8572: You are using UPCs, EANs, ISBNs, ASINs, or JAN codes that do not match the products you are trying to list. If you believe you have reached this message in error, please contact Seller Support with the following information:

I don’t understand why. I am listing it from India and have verified and crosschecked the ISBN various times and it is correct. Furthermore, I was able to list it on other Indian e-commerce websites which could verify the ISBN successfully. First timer here, please do help me.