'We are unable to get verification from Huawei server for IAP kit

We are implementing the In-app purchase module. While the implementation we have done all the implementation of the mobile end and server end but after purchasing a subscription we are trying to verify that purchase from the Huawei server through our server in which we got the following error:

get token error! the oauth server response={"sub_error":20003,"error_description":"parameter invalid","error":1101}

can you suggest to us what's the wrong part we are implementing or we are missing something?



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