Why Referral API returns different products instead of the one we asked for in a request?

[dizlv]

As an onboarding step we send partner referral request

/v2/customer/partner-referrals

with passed 

EXPRESS_CHECKOUT

product type. Then, after redirect we send another request here 

/v1/customer/partners/{partner_id}/merchant-integrations/{merchant_id}

and try to extract enabled product type `products` response field. But sometimes we don't have request product, but we do have something like this:

products: [
    {
        name: 'MOBILE_PAYMENT_ACCEPTANCE', 
        status: 'ACTIVE'
    }
]

which not something we expect. And also we are not sure how to handle this situation properly.