topic Re: post request for service doesnt work in ThingWorx Developers

post request for service doesnt work

IA_10816220 — Thu, 02 Jan 2025 10:03:21 GMT

hello,

i am trying to work with the thingworx api , i can do GET request to get properties values and it is fine but when i tried to test the POST request to run a service, it doesn't work , although the service itself works fine it has no inputs and it output the data in infotable (it has QueryPropertyHistory service in it, that returns the infotable)

and i am testing the api locally with this links (i double checked the names)
http://localhost/Thingworx/Things/Eastern.Security.Vehicle.5971/Services/TestQueryData

i am also using API key in postman header and it works fine when i do get property,

her is the error i get in the post man

<!DOCTYPE html> <html> <head> <title>Unexpected Error</title> <script> function clickAndDisable(link) { link.onclick = function(event) { event.preventDefault(); } } </script> </head> <body> <div class="widget-panel widget-container widget-content" style="overflow: auto;"> <div class="widget-content widget-image undefined" id="error_Image-1"> <img src="/Thingworx/images/ThingworxLogo.png" alt="Errors"/> </div> </div> <div id="error_Panel-1"> <p>500 Unexpected Error - Contact your system administrator for more details</p> <a href="/Thingworx" onclick='clickAndDisable(this);'>Back to Composer</a> </div> </body> </html>

also i tried to check the monitor window in the composer under script log i cant see any errors or indications that the script or the service has been executed

thank you,

Re: post request for service doesnt work

VladimirN — Thu, 02 Jan 2025 13:58:56 GMT

More about this error:

"Thing Service returns "500 Unexpected Error - Contact your system administrator for more"": https://community.ptc.com/t5/ThingWorx-Developers/Thing-Service-returns-quot-500-Unexpected-Error-Contact-your/td-p/672334
"500 Unexpected Error - Contact your system administrator for more details" is seen after logging into Composer on ThingWorx Platform"": https://www.ptc.com/en/support/article/CS355687

Re: post request for service doesnt work

VladimirRosu — Mon, 13 Jan 2025 07:53:38 GMT

Hi @IA_10816220 ,

Can you show us the headers you setup in Postman for this Service request? (make sure to remove any sensitive information in there, of course)

Re: post request for service doesnt work

nmutter — Tue, 14 Jan 2025 12:55:49 GMT

- when GET is working I assume authorization is fine (via appkey or basicauth)

- for POST you need to specify Header "Content-Type: application/json" and best also header "Accept: application/json". Also you need to pass required parameters of the service in the body.

When you get the 500 error you might also want to check the TWX Logs (Application/Script/..) if you find what caused the error. Maybe your service is being executed as you want but has an issue while executing (e.g. parameter is missing).

Re: post request for service doesnt work

abandal — Mon, 20 Jan 2025 13:24:04 GMT

Hi @IA_10816220 ,

I wanted to follow up with you on your post to see if your question has been answered.

If so, please mark the appropriate reply as the Accepted Solution for the benefit of other members who may have the same question.

Of course, if you have more to share on your issue, please let the Community know so that we can continue to support.

Thanks,
Abhi