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MoMo API Production Q&A
MoMo API Sand Box Q&A

162 Topics

fmtNew Member

MoMo API Production Q&A

Unable to Recreate Pre-Approval After Expiry & Get Approved Pre-Approvals Not Supported (Ghana)

Issue 1: Cannot Create New Pre-Approval After ExpiryDescription:After a pre-approval mandate expires, attempts to create a new pre-approval for the same MSISDN consistently fail.Steps to Reproduce:Create a pre-approval mandate for an MSISDN.Allow the pre-approval to expire.Attempt to create a new pre-approval mandate for the same MSISDN.Actual Result:The request fails with the following response:{ "message": "Preapproval already exist and is in pending state", "code": "PREAPPROVAL_EXIST_PENDING"}Despite this, the MSISDN holder still receives an STK Push to approve the transaction,when a normal request to pay is initiated on the MSISDN which suggests the previous pre-approval is no longer active.Expected Result:Once a pre-approval has expired, the system should allow the creation of a new pre-approval mandate for the same MSISDN.Issue 2: Get Approved Pre-Approvals Endpoint Not SupportedDescription:The Get Approved Pre-Approvals API is not supported in the Ghana target environment.Step

hassuNew Member

MoMo API Production Q&A

currency handling

i am using both stripe and momo in my web app.I have dollar currency of my platform.i am wondering if i convert the currency to local one based on users location on my end.it will be less reliable.DOES Momo supports the dollar currecny and convert it on its own.or what to do.

Bale Bob HenryNew Member

MoMo API Production Q&A

MTN UGANDA MOMO API

I want to create an MTN MOMO merchant account. Who can help

kpatchaviNew Member

MoMo API Sand Box Q&A

Request to pay dont send callback

Hi everyone,I’m having some trouble with the MTN MoMo API, specifically with the requestToPay endpoint.When I send a requestToPay, I get an HTTP 200 response, but the body looks like this: HTTP/1.1 200 OK cache-control: no-cache content-length: 247 content-type: text/html; charset=utf-8 pragma: no-cache vary: Origin x-content-type-options: nosniff x-frame-options: SAMEORIGIN x-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: 11597720049318046811<br><br> <a href='javascript:history.back();'>[Go Back]</a> </body> </html> The problem is that no callback is ever sent, even though I receive this 200 response.Has anyone experienced this before or knows what might be wrong? Any help would be appreciated. 🙏

menziNew Member

MoMo API Sand Box Q&A

Create user request

Please assist, I am getting this error from the andbox

DataGodNew Member

MoMo API Production Q&A

How to make operation like selling credit or package via Momo API routes

Hello all, I would like to know how can I send a credit or package for communication to a customer, via MoMo API routes. What can be the process and what are different identifications required on that. The SIM card which makes the operation is a merchant one. Can you help me please

carlosActive

MoMo API Sand Box Q&A

Failure to connect to the sandbox server

Why I’m I getting this error when I try to create an API user for the sandbox environment?I could use some help

roberthirwaNew Member

MoMo API Sand Box Q&A

Starting to install MoMo collection widget on wordpress site

Where can I find the JavaScript implementation code for the Collection Widget? I need the widget.js URL and initialization code.

roberthirwaNew Member

MoMo API Sand Box Q&A

MoMo Collection widget

I have a WordPress site and I want to add an MTN collection widget to allow people to donate to our website using it?

romeshcisNew Member

MoMo API Sand Box Q&A

Payment gateway integration

HiI wanted to integrate payment gateway in my web application based on flutter web and node js, Can you pleas guide me step by step process for doing this. Also let me know about the required API keys and from where i can get these.Thanks

pragatiNew Member

MoMo API Production Q&A

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" }

widberNew Member

MoMo API Sand Box Q&A

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>

devsmsNew Member

MoMo API Sand Box Q&A

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?

ranihaddadNew Member

MoMo API Sand Box Q&A

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

JulianNew Member

MoMo API Production Q&A

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.

kbaahNew Member

MoMo API Production Q&A

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

MatteoNew Member

MoMo API Sand Box Q&A

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!

DeginNew Member

MoMo API Production Q&A

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."

wkangongNew Member

MoMo API Sand Box Q&A

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"}

edwin.niwahaNew Member

MoMo API Sand Box Q&A

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

School boyNew Member

MoMo API Production Q&A

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

MoMo API Sand Box Q&A

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"}```

wkangongNew Member

MoMo API Sand Box Q&A

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

BRIZAM SystemsNew Member

MoMo API Production Q&A

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.

bhavinNew Member

MoMo API Sand Box Q&A

Unable to obtain a new access token.

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

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Get Paid: Enabling Seamless Payments for All businesses from the MoMo Subscribers

1 year ago

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