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Question

MTN MoMo Disbursement API returns 401 "Access denied due to invalid subscription key" in live environment

  • Apr 10, 2025 7:22 AM UTC
  • 4 replies
  • 224 views

I'm trying to integrate the MTN MoMo Disbursement API in my Laravel app to generate an access token. However, when switching to the live environment, I receive the following error:

"statusCode": 401, "message": "Access denied due to invalid subscription key. Make sure to provide a valid key for an active subscription."

    4 replies

    • isotope
    • New Member
    • Apr 22, 2025 6:04 PM UTC

    hi.

     

    • leontymo
    • Community Manager
    • Apr 25, 2025 4:25 AM UTC

    Hello, 

    When you go live, you will be given production subscriptions keys. I suspect you are using sandbox subscription key on production endpoints. Also note that a subscription key for collections does not work for disbursements and vice versa.

    Hello, 

    When you go live, you will be given production subscriptions keys. I suspect you are using sandbox subscription key on production endpoints. Also note that a subscription key for collections does not work for disbursements and vice versa.

    These has happened to me even on an already working project. The mtn platform is very unstable

    • Nazil
    • New Member
    • Oct 17, 2025 1:46 PM UTC

    this is whats happening on sanbox to i have tried all since morning 

    {

    "statusCode": 401,

    "message": "Access denied due to invalid subscription key. Make sure to provide a valid key for an active subscription."

    }

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