safaricom / mpesa_listener Goto Github PK

I have downloaded and setup the project on my local environment and used localtunnel to get a public url. The endpoint for B2C is hit but I get

The DebitParty is in an invalid state

and I am using the credentials on my test credentials page. Also the documentation is sparse in terms of what I should send back in the callback per call

i have submited callbacks urls but i dont get any messages on those urls when i call the simulator, though the simulator responds with success