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MoMo API Sand Box Q&A

Share sandbox questions and get support from the community

  • 73 Topics
  • 177 Replies
73 Topics
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BockarieMarahNew Member
asked in MoMo API Sand Box Q&A
Sandbox Out of call volume quota Error

we could no longer make any new request from our sandbox environment to any of the MoMo API endpoints. We keep receiving this error message "{ "statusCode": 403, "message": "Out of call volume quota. Quota will be replenished in 2.13:47:06." } "Please, how do we resolve this issue?

722
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1 year ago
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DevisArineitweNew Member
asked in MoMo API Sand Box Q&A
Failure to intergrate request payment

<?phpif ($_SERVER['REQUEST_METHOD'] === 'POST') {    // Replace these with your actual API credentials    $api_key = '';    $api_secret = '';     // Update the API endpoint    $api_endpoint = 'https://api.mtn.com/collection';     // Data for the collection    $data = array(        // Validate and sanitize the amount input        'amount' => filter_var($_POST['amount'], FILTER_SANITIZE_NUMBER_INT),        'currency' => 'UGX',        // Validate and sanitize the phone number input        'payer' => filter_var($_POST['phone_number'], FILTER_SANITIZE_FULL_SPECIAL_CHARS),        // Specify the receiver of the money        'payee' => '256789123456', // Replace this with your own phone number or another phone number that you want to receive the money    );     // Headers for the API request    $headers = array(        'Authorization: Basic ' . base64_encode($api_key . ':' . $api_secret),        'Content-Type: application/json',    );     // Initialize cURL session    $ch = curl

491
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1 year ago
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allan.ddamuliraCommunity Manager
asked in MoMo API Sand Box Q&A
api user failing with 400 error.

api user failing with 400 error. 

160
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1 year ago
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developer.hintekkNew Member
asked in MoMo API Sand Box Q&A
Cannot submit requestpay api

Getting a 400 bad request while doing a request payment in sandbox. with no further message and not sure why or what is wrong.

1679
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1 year ago
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payment-integration-novomaticNew Member
asked in MoMo API Sand Box Q&A
400 Bad request on Remittance API (/transfer request)

Hello,I am integrating my application with two APIs (Collection and Remittance)Collection API works ok, I can successfully call /requesttopay and receive callback after processing, but on Remittance collection I receive 400 over and over again. I have no idea why, because /requesttopay body and headers looks the same as in /transfer request. Any idea how to solve it ?My request  

822
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1 year ago
Lubunde Job
Lubunde JobNew Member
asked in MoMo API Sand Box Q&A
Bank Transfers

How can the MoMo Open API be used to make bank transfers (both deposits and withdraws)?

301
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1 year ago
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Simon Peter TugumeCommunity Manager
asked in MoMo API Sand Box Q&A
Create apiuser & apikey on sandbox

A step by step guide to create apiuser and apikey on momodeveloper.mtn.com in sandbox provisioning section.

431
byaruhaf
1 year ago
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stanleyNew Member
asked in MoMo API Sand Box Q&A
Generating Oath 2 Token

Hi I am getting a 400 error. When trying to create an auth 2 token. I have all the required fields filled up but I still getting the error. Can you guide me through

210
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1 year ago
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flexyakinNew Member
asked in MoMo API Sand Box Q&A
Wallet system

Good morning house,Please can anyone just give me a brief flow on how a wallet system can work with momo APIsThank you

120
F
1 year ago
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DdamulaCommunity Manager
asked in MoMo API Sand Box Q&A
How can i configure callback in SandBox ?

How can i configure callback in SandBox ?

782
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1 year ago
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MalakActive
asked in MoMo API Sand Box Q&A
Remittance: C2C

Good morning MTN community 😊I want to use Remittance product to allow my app users to transfer money to their friends.I got confused about which endpoint to use, cashTransfer or Transfer.in the transfer request body the sender is not mentioned, therefor the sender is my application account not my user’s account right? in cashTransfer, are the funds transfered from the mtn mobile money account or in cash? and can you give me an example of values of the following attributes please? { "orginatingCountry": "string", "originalAmount": "string", "originalCurrency": "string", "payerIdentificationType": "PersonIdentificationType1Code", "payerIdentificationNumber": "string", "payerIdentity": "string", "payerLanguageCode": "string", "payerMsisdn": "string (Msisdn)", "payerGender": "string"} Thank you for your help. @crankluga @allan.ddamulira @anicet @Maxie @Lubunde Job 

722
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1 year ago
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emmaetiguNew Member
asked in MoMo API Sand Box Q&A
Create Access Token Sandbox HTTP Response - 500 Internal Server Error

Hi Guys, The create access token API (Post) is giving me a 500 internal server error. The specific response is below. "error": "login_failed"What could be the problem.  Thanks Emma  

1333
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1 year ago
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nshimiye.techNew Member
asked in MoMo API Sand Box Q&A
Does anyone know why momo widget demo doesn't work

https://widget.northeurope.cloudapp.azure.com:9443/demo.html 

170
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1 year ago
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MalakActive
asked in MoMo API Sand Box Q&A
Operations by customer consent

What endpoints can I use with the token oauth2.0 generated by the customer consent?I wanted to perform some actions on behalf the customer as mentioned in the docs but I didn’t find the corresponding endpoints. Are they under development? or are they available on live env? options like:Transfer with customer consent. Merchant payment with customer consent. Bank transfer with customer consent.  

130
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1 year ago
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MalakActive
asked in MoMo API Sand Box Q&A
Virtual test accounts

Hello MTN great community,I want to see if my mtn transactions are really working, does mtn offer a platform were we can log into virtual mtn account and see if the money has been transferred successfully ? or is there any methods to get this information.Thank you.

1354
byaruhaf
1 year ago
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allan.ddamuliraCommunity Manager
asked in MoMo API Sand Box Q&A
When is oauth2 Token used?

When is oauth2 Token used? 

180
A
1 year ago
LeviO
LeviONew Member
asked in MoMo API Sand Box Q&A
Sandbox API Testing

Can the sandbox API be tested on a application? When I send a call to the requesttopay endpoint I get a server error. Secondly collection widget display but doesn’t work and when I tried to create Oauth 2.0 token I get Authorized as status code and error of “invalid client”. I also want to know how I can place the API user key and API key on the authorization field after encoding to base64.

1538
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1 year ago
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codroneActive
asked in MoMo API Sand Box Q&A
Sandbox User Provisioning Error Access Denied

Hello,It’s. my first time to use the momo api. I am trying to create a user in sandbox using firebase authentication trigger function. I subscribed for collections widget and am passing its primary key as the Ocp-Apim-Subscription-Key.the user is being created successfully when i run in the sandbox but returns access denied when i execute the code.import * as admin from "firebase-admin";import * as functions from "firebase-functions";import { v4 as uuid4 } from "uuid";export const createUser = functions.auth.user().onCreate(async (user) => { const uid: string = user?.uid; const myUUID = uuid4(); const key = functions.config().primarycollection.key; console.log(myUUID); try { await admin.firestore().collection('users').doc().set({ userId: uid, myUUID, createdAt: user.metadata.creationTime, }); const provideUser = await fetch("https://sandbox.momodeveloper.mtn.com/v1_0/apiuser", { method: "POST",

18410
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1 year ago
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codroneActive
asked in MoMo API Sand Box Q&A
Sandbox User Provisioning

this was a duplicate and i haven’t figured out how to delete yet. sorry 

90
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1 year ago
LeviO
LeviONew Member
asked in MoMo API Sand Box Q&A
API Calls

I get CORS Policy error each time I try to make a request with the JavaScript fetch API to any of the sandbox endpoints but it works on the sandbox page

666
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1 year ago
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BryanNahabweNew Member
asked in MoMo API Sand Box Q&A
I can't find cancel PreApproval endpoint?

Hello Team, Hope you are doing well. I read through the MTN MoMo Open API sandbox documention but I can’t find the cancel preapproval endpoint. I can create and check the status of the preapprovals. Your help will be appreciated.Thank you

401
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1 year ago
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BryanNahabweNew Member
asked in MoMo API Sand Box Q&A
How do I generate the Consent Auth Request ID used in the CreateOauth2Token endpoint?

I downloaded the postman collection of APIs. However, in the variables, the consent request id is already defined. I was wondering how it is generated in the testing sandbox. I want to use it when creating an Oauth2 token which I later use in other endpoints that require it.

1013
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1 year ago
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allan.ddamuliraCommunity Manager
asked in MoMo API Sand Box Q&A
What are the different products in MoMo Open API

What are the different  products in MoMo Open API

301
A
1 year ago
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