@tdurivaux @vsanvincenti

Would you mind take a look at the NDC 19.2 Endpoint(http://iata.api.mashery.com/athena/ndc192api
)? It's not working now

I always get gateway error

<h1>Gateway Timeout</h1>

Hi, We are looking to qualify for Level 4 for NDC certification, for this, we are close enough to submit our application to IATA. We are just facing a problem getting information about OrderChangeNotif.xsd
we did not find any helping material postman collection in ATHENA 19.2 on how can we implement it?

And one more thing is there any postman collection available for ATSB 21.4 ?

https://developer.iata.org/en/sandbox/#tab-2

Can you please tell me what is wrong with my request, I used your provided XML, should I need to update it with the real data? Wherefrom Can I get the Aggregator and Travel Agency Info?
<Error ShortText="Error while calling OFMS service." Code="911">Unable to process - system error</Error>

I am getting response '

596 Service Not Found