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MoMo API Sand Box Q&A

Share sandbox questions and get support from the community

  • 78 Topics
  • 182 Replies
78 Topics
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mutangizi ronaldNew Member
asked in MoMo API Sand Box Q&A
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

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wkangongNew Member
asked in MoMo API Sand Box Q&A
Phone Support

we are working on a time sensitive important project and encountering login failure while trying to obtain an access token using basic authentication

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kmdfmsNew Member
asked in MoMo API Sand Box Q&A
apiuser

I successfully created it using/v1/0/apiuser/v1/0我使用/v1/0/apiuser/v1/0成功创建了它I successfully created it using/v1/0/apiuser/v1/0 apiuser, but using/V1_0/apiuser/{X-Reference Id} does not return any data for apiUser. Which API do I need to use to obtain apiUser? I can successfully obtain apiKey through/v1.0/apiuser/{X-Reference Id}/apikey  

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TeccoNew Member
asked in MoMo API Sand Box Q&A
what is the collection widget about

I have been looking through the documentation and can’t find much information about the collection widget product. All I could find is that it enables a developer or partner to integrate a MoMoPay checkout button to accept Mobile Money payments on your e-commerce site. but what differentiates it from the othe collections product and how can we implement it in the sand box.

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csmitNew Member
asked in MoMo API Sand Box Q&A
Sandbox access token invalid token_type?

Hi!When I do a POST to the CreateAccessToken endpoint I get a response where the token_type has a value set to "access_token" instead of something like "Bearer". I’m expecting the token_type to be Bearer since the Transfer endpoint documentation states that the Authorization header should be the “Bearer Authentication Token generated using CreateAccessToken API Call”.Am I missing something?Any help/advice would be greatly appreciated!

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BoanergesNew Member
asked in MoMo API Sand Box Q&A
Can't create user in sanbox environment getting subscription key invalid, but it is valid.

I am trying to creacte an api user in the sandbox environment, I can verify that I am doing everything correctly however I am getting “Access denied due to invalid subscription key. Make sure to provide a valid key for an active subscription.” . I have tried using the primary and secondary keys, none are working for me. I have gone through most of the issues mentioned and the solution people justed nothing seems to be working for me. As a reference this is the request I am making,curl --location 'https://sandbox.momodeveloper.mtn.com/v1_0/apiuser' \--header 'Ocp-Apim-Subscription-Key: b93400415bde4c96b06c57e698789cda' \--header 'X-Reference-Id: 8b1a5696-9c43-41c6-a884-d11e0f5bfe17' \--header 'Content-Type: application/json' \--data '{    "providerCallbackHost": "https://webhook.site/b6b6cb4c-e9fa-42b8-96a8-b82e25859b85"}' 

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RichouNew Member
asked in MoMo API Sand Box Q&A
check user balance and send money

Hello, i m using momo for wallet base . The wallet is not momo wallet but the user can request to send money in her momo to another account. We need to check balance and transfert the Money from one account to another . How can i achieved that  ?  thanks 

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gnakoNew Member
asked in MoMo API Sand Box Q&A
[dev sandbox] Invalid subscription key for the Collection Widget | Receive mobile money payments on your website through a USSD or QR code

Hi there,It seems that you have some issues with the generated subscription keys for this Collection Widget. Can you please help me get a proper key that I can use. Neither the primary nor the secondary keys are working.

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ddanneelsNew Member
asked in MoMo API Sand Box Q&A
sandbox gives me 400 Bad Request on refund

Hello,I am trying to call disbursement/v1_0/refund on the sandbox but I always get http 400 - Bad Request.Is this method working on the sandbox ? I’ve also tried from your documentation website. Here is the syntax used : POST https://sandbox.momodeveloper.mtn.com/disbursement/v1_0/refund HTTP/1.1Authorization: ...X-Reference-Id: 0a63a755-355f-409c-a94d-a42818dea651X-Target-Environment: sandboxContent-Type: application/jsonCache-Control: no-cacheOcp-Apim-Subscription-Key: 539f8a1f05d94b17a4e53cbe90219f15{    "amount": "7500.9",    "currency": "EUR",    "externalId": "2B58A65F38C5EA0EE06323671FAC0695",    "referenceIdToRefund": "579530f0-68d5-4886-b352-bdec7f816c9f"} HTTP/1.1 400 Bad Requestcontent-length: 0date: Fri, 10 Jan 2025 13:38:44 GMTvary: Originx-xss-protection: 1; mode=block

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kaliiNew Member
asked in MoMo API Sand Box Q&A
smile

🤣

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krishna.rathiNew Member
asked in MoMo API Sand Box Q&A
Subscription keys

Hello sir/madam,I have subscripted Collection Widget product but both key is not working. please help.

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Ange ArseneNew Member
asked in MoMo API Sand Box Q&A
What is the difference between a RequestToPay and a RequestToWithdraw

What is the difference between a RequestToPay and a RequestToWithdraw

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jeanlinuxNew Member
asked in MoMo API Sand Box Q&A
Receiving INVALID_CALLBACK_URL_HOST error when trying to use the distribute/CashIn endpoint on PostmanCollection

I have created an API user and API key on sandbox and has set the providerCallbackHost correctly, However when I try to make a disbursement on the endpoint disbursement/v1_0/deposit, I am getting the error “Callback URL does not match the configured value.” on request. even though the callback url host is the same as providerCallbackHost when creating the API user.attached are screenshots of the request and response.  

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ugnicholasNew Member
asked in MoMo API Sand Box Q&A
Invalid remote certificate

Hello guys,I’m receiving this error when i try to get access_token “The SSL connection could not be established, see inner exception. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure: RemoteCertificateNameMismatch, RemoteCertificateChainErrors” I’m using .Net environment

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jeanlinuxNew Member
asked in MoMo API Sand Box Q&A
Where are the endpoints that uses Oauth2 token for disbursements

I am building a simple app for disbursement and would like to get consent from user(merchant) before disbursement with recipients managed on the web.Now I have gotten the Oauth2 token but can not find the endpoints to actually use it.I checked use cases page and it appears I can use MerchantTransferWithConsent but there is no documentation of endpoints on Postman Collection. How do I achieve this kind of disbursement with consent flow that I have?Thanks for your time.

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jeanlinuxNew Member
asked in MoMo API Sand Box Q&A
CreateOauth2Token request is returning 400

I am trying to get Oauth2 token after successfully issuing a bc_authorize request and getting the auth_req_id.now trying to get token to the request by making a post to {{base_url}}/disbursement/oauth2/token/ and I keep getting 400 status error with no message, it is difficult to know exactly what I am doing wrong, I have attached screenshots of my Postman screen.~I appreciate the assistance

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MalakActive
asked in MoMo API Sand Box Q&A
Authorisation

Good morning team, I hope you are doing great. I am having some concerns if you can help me:What is the role of bc-authorize and CreateOauth2Token ? (I didn’t understand how it happens in real time, or what is its use).what is the difference between CreateOauth2Token and CreateAccessToken?Why do I need bc-authorize and CreateOauth2Token if I can make my requests only with CreateAccessToken?

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sadikimamNew Member
posted in MoMo API Sand Box Q&A
san

How can I be gaining in momo api

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GeniusNew Member
asked in MoMo API Sand Box Q&A
Momo API Sandbox Internal Server Error

I am trying to create a new user with the collection sandbox API but I keep getting the error below for this endpoint and another endpoint I tested since yesterday: {"statusCode": 500,"message": "Internal server error","activityId": "98383705-c916-4012-8e07-d27644e1da22"}

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jonathanNew Member
asked in MoMo API Sand Box Q&A
Error 500 on user creation

I have had this issue the whole of today. Is it an issue with the sandbox? { "statusCode": 500, "message": "Internal server error", "activityId": "c5f402f7-dabf-4473-8df7-2a1f4172a42d" }

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MalakActive
asked in MoMo API Sand Box Q&A
callback url

Hello 🤗I tried to configure the callback URL in the sandbox with two values and both didn’t work. Here are the steps I followed:1- Created and API user:{"providerCallbackHost": "localhost:3000"}2- Generated and API key.3- Generated basic auth with the reference ID of the user API and the API key.4- added this header to the requesttopay:'X-Callback-Url': 'http://localhost:3000/api/mtn'I tried these values too:"providerCallbackHost": "kiad-api-pr-28.onrender.com"'X-Callback-Url': ‘http://kiad-api-pr-28.onrender.com/api/mtn’But these urls was never reached.Can you please help me 🤕@Ddamula @allan.ddamulira @crankluga @anicet 

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AjayChandrasekaranNew Member
asked in MoMo API Sand Box Q&A
Not receiving callback in Sandbox

I have subscribed to the Collections product, and trying to test the request to pay (v1_0/requesttopay) in sandbox. I am setting the callback URL in the header of this request. Using the same domain I had provided while creating API user.The callback URL allows both HTTP and HTTPS, both PUT and POST is also allowed.The payments requests are getting accepted and when I do a status check they are successful. But I am not receiving any callbacks. I have tried sending multiple payment requests but did not receive callback for any of the request. Example request payload:URL: https://sandbox.momodeveloper.mtn.com/collection/v1_0/requesttopayRequest payload:{"currency":"EUR","amount":"15","externalId":"b5926558-cd36-40fa-b455-67ef5e97d2e5","payer":{"partyIdType":"MSISDN","partyId":"22933123466"},"payerMessage":"Wallet Recharge","payeeNote":"Wallet Recharge"}

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renaudNew Member
asked in MoMo API Sand Box Q&A
X-Target-Environment

Hello I want to know what value concerns X-Target-Environment for the request headers in the sandbox because I put sandbox but the answer returns me an error 400 thank you kindly refer me to those who know  this is a description about X-Target-Environment The identifier of the Wallet Platform system where the transaction shall be processed. This parameter is used to route the request to the Wallet Platform system that will initiate the transaction.

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KalungiNew Member
asked in MoMo API Sand Box Q&A
401 Acess denied: Missing Subscription Key

I keep getting this error in Postman even though I provide the Ocp-Apim-Subscription-Key holding my Primary Key. How do I set the Subscription Key Header to get rid of this error?500 Internal Server errorI have all four headers in place.It works fine when I use the API’s testing environment but I want to use something external to identify  anything being done for me behind the scenes!I’m creating API User in sandbox!

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lukwatajohnNew Member
asked in MoMo API Sand Box Q&A
Currency not supported. INVALID_CURRENCY

The request body below returns invalid currency. What currency codes work for Uganda? Tried altering the currencies but same error.{ "amount": "40000", "currency": "UGX", "externalId": "c1f4687688585858a173f12", "payer": { "partyIdType": "MSISDN", "partyId": "25678119xxxx" }, "payerMessage": "Payment for services", "payeeNote": "Payment for services"}

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