Ask the MoMo Community

Production Mode error

Below is for live testing URL :: https://proxy.momoapi.mtn.com/v1_0/apiuserheaders :: {X-Reference-Id: id, Ocp-Apim-Subscription-Key: key, Content-Type: application/json}body :: {providerCallbackHost: https://dulu.cm/success}apiuserAPI :: 404 :: { "statusCode": 404, "message": "Resource not found" }

661

widberNew Member

Getting 200 response when creating Api User.

I believe I an following the instructions correctly. POST https://sandbox.momodeveloper.mtn.com/v1_0/apiuser HTTP/1.1X-Reference-Id: f9b22c29-eaeb-4423-9a29-960ece987648Content-Type: application/jsonCache-Control: no-cacheOcp-Apim-Subscription-Key: ••••••••••••••••••••••••••••••••{ providerCallbackHost: "string"}The X-Reference-Id is a UUID from online generator.Ocp-Apim-Subscription-Key is from mu Collection product.The result:HTTP/1.1 200 OKcache-control: no-cachecontent-length: 247content-type: text/html; charset=utf-8pragma: no-cachevary: Originx-content-type-options: nosniffx-frame-options: SAMEORIGINx-xss-protection: 1; mode=block<html><head><title>Request Rejected</title></head><body>The requested URL was rejected. Please consult with your administrator.<br><br>Your support ID is: 11597720049319855937<br><br><a href='javascript:history.back();'>[Go Back]</a></body></html>

1363

devsmsNew Member

Sandbox RequestToPay | 400 Bad Request Error

These are the steps I follow, I have created a collection product and I have my primary and secondary subscription keys.First step was to create an API user when was successful Second step, i created an API key for the API user which was successful. Third step, I created an access token for the user under the collections product subscription. Fourth step, I initiated the requestToPay request but it keeps failing with a 400 Bad Request. Is this an issue currently with the system (going by the error, it is not) or is it specific to me?

1281

ranihaddadNew Member

Unable to Generate API User – Invalid Subscription Key Error

I hope you are doing well. I need assistance with an issue I am encountering while trying to generate an API user in sandbox environment.I have followed all the steps outlined in the documentation: Signup For An Account – Completed Subscribe To Our Products – Completed (subscribed to Collection Widget) Manage Your Subscriptions – Subscription is active, and I have received both the primary and secondary keys Generate API User and API Key – This step is failing To generate the API user, I am using the following endpoint:POST https://sandbox.momodeveloper.mtn.com/v1_0/apiuserHeaders sent:{ "X-Reference-Id": "<uuid-v4>", "Ocp-Apim-Subscription-Key": "<Subscription-Primary-Key>", "Content-Type": "application/json"}Body :{ "providerCallbackHost": "webhook.site"} However, the API returns the following error:Response:{ "statusCode": 401, "message": "Access denied due to invalid subscription key. Make sure to provide a valid key for an active subscription."} I have veri

991

JulianNew Member

Signin issues

I'm having trouble signing in to my account. Although the sign-in process appears to be successful, I'm not being redirected to my dashboard afterward.

1151

kbaahNew Member

How long does the momo onboarding take

I am an owner developer, i have sent my documentation but there is no way to get feedbackcan some one help me with a contact and feedback protocolsthanksK. Baah

380

MatteoNew Member

Can I get 2 different users to pay each other on my app with this api?

I have a mobile application in which people can buy products/services from other users.Is it possible for the sellers, when they signup, to link their mobile money account with this API, so that when the buyers go to buy a product from the seller, they can pay - either with just mobile money too or other payment methods ( I am not sure how that works with this API) - directly too the sellers mobile money account.Also how would this work with different currencies / countries?Thank you MoMo community!

390

DeginNew Member

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

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."

1744

wkangongNew Member

bad request remittance transfer

I am getting remittance transfer bad request error message. my request body is this. any wrong?{ "amount": "600", "currency": "EUR", "externalId": "00004335", "payee": { "partyIdType": "MSISDN", "partyId": "56733123450" }, "payerMessage": "MoMo Market Payment", "payeeNote": "MoMo Market Payment"}

180

edwin.niwahaNew Member

sandbox error

https://momodeveloper.mtn.com/sandbox/Hello MoMo community,I get the below error message on trying to access the sandboxOops, something went wrong

7990

School boyNew Member

ApI issued

I need this keys please someone help me how to fine them am new

833

nanayawActive

Access token not included in the response(Response 200)

The documentation is very conclusive but the last step in the process was not yielding me what I wanted and I found a video on youtube which used the reference id (uuid) as a username and the api key as the password. As shown in this image https://postimg.cc/87S93Mrk . There was no token. Please I need to clarify the contents of the last request. I don’t want to say the documentation is wrong but the difference is the video used basic auth in the authorization and followed it as I described earlierResponse ```{ "providerCallbackHost": "string", "targetEnvironment": "sandbox"}```

421

wkangongNew Member

StatusCode: 500, ReasonPhrase: 'Server Error'

{StatusCode: 500, ReasonPhrase: 'Server Error', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:{ X-XSS-Protection: 1; mode=block Request-Context: appId=cid-v1:e996501c-e721-4ac1-97ff-dc6887b85e8c Date: Wed, 24 Sep 2025 18:39:51 GMT Content-Length: 0}} what is the fixed

493

BRIZAM SystemsNew Member

How Should i Use my Collections API

So I want to use Collections and Disbursement APIs. I want to include them in my School Data Management System(SDMS) in Uganda. And my Question is, I have several schools Using my System, So the parents will be paying School Fees directly through the System. Should that money first go through my phone (Using the Collections API) such that i pick my commission and there after my phone sends it to the respective Schools (Using Disbursement). I really need to know how am going to handle this.Someone guide me on what is required.

420

10 months ago

bhavinNew Member

Unable to obtain a new access token.

i have got error in laravel “Unable to obtain a new access token.”in sendbox

190

10 months ago

renukanNew Member

What parameters are required to trigger SMS notifications to customers in production?

Hello MTN MoMo Community,I'm successfully creating payment requests in production (getting HTTP 202 responses), but customers are not receiving any SMS notifications to authorize the payments.🔧 Current Setup:Environment: Production with live keys Country: Côte d'Ivoire API: Collections requesttopay endpoint Response: HTTP 202 (request created successfully)✅ What's Working:Authentication is successful Payment requests are created without errors API responses indicate success Using correct production URLs and target environment❌ The Issue:Customers receive no SMS notifications When customers dial the USSD code, they see "No pending transactions" Transactions appear to be created but not pushed to customer devices❓ My Questions:Are there specific payload parameters required to trigger SMS delivery? Do I need special headers beyond the standard ones for SMS notifications? Is there a separate SMS trigger API call required after requesttopay? Are there customer number validation requirement

1331

11 months ago

oforismlNew Member

Open API Post request Failure: Sandbox Environment

I am consuming the MTN Open API and most of the endpoints worked except for some specific endpoints which I would enlist below;Kindly note that the response I receive from these are all BAD REQUEST so kindly help me out in determining what is the issue; Request to Pay: POST https://sandbox.momodeveloper.mtn.com/collection/v1_0/requesttopayHeaders: X-Target-Environment X-Callback-Url X-Reference-Id Ocp-Apim-Subscription-Key Authorization Request Body: {"amount": "2.0","currency": "GH","externalId": "7916d515-ab40-4bba-bb67-b68bfb13b94c","payer": {"partyIdType": "MSISDN","partyId": "23354****414"},"payerMessage": "Kindly accept for payment of TEST","payeeNote": "Thanks for paying for Test"} Disbursement / Transfer POST: https://sandbox.momodeveloper.mtn.com/disbursement/v1_0/transfer Headers: X-Target-Environment X-Callback-Url X-Reference-Id Ocp-Apim-Subscription-Key Authorization Request Body: {"amount": "2.0","currency": "GH","externalId": "e4f7

17311

11 months ago

DnlcodessNew Member

HELP!!! I’m unable to create an API USER

I tried creating an api user in the postman by sending a post request on postman to this link https://sandbox.momodeveloper.mtn.com/v1_0/apiuser. The post request contained in my header X-Referene-Id(a random uuid generated by a uuid generator), Ocp—Apim-Subscription-Key(which is the primary key gotten after subsrcibing to a product, in my case I subsricbed to the collection widget producr) and Content-type(whose value was application/json). After doing all of this and sending the post request, I am getting a status code of 401 “saying Access Denied due to invalid subscription key. Make sure to provide a valid key for an active subscription”. I have confirmed multiple times that I use the primary key and i even tried out the secondary key but same thing, I have tried to open another account to subscribe to a new product, yet still the same thing. I will sincerely appreciate it if this can be attended to as soon as possible

1524

1 year ago

Mr_RobotNew Member

I'm unable to select product.

I trying to get an api subscription key for collection and disbursement subscribe page activates but can’t subscribe to any product what might be the issue?

601

1 year ago

mutangizi ronaldNew Member

am failing to create the access token

i dont know when i try to create the access token in the sandbox i get 401 response invalid client .any one help me

1823

1 year ago

wkangongNew Member