Vikram Annadurai · Jul 17, 2019

Getting "Service Unavailable" Error on PostMan

Hi Guys,

    I am new to Cache, I am trying to create an simple REST API on Studio and testing it with postman before that i have config the Web Application System > Security Management > Web Applications > Edit Web Application and i have attached my snapshot also with this post.

   When i testing it on postman i am getting "Service Unavailable" error. I really don't know where i did a mistake. I tried to console it on my code, when I the postman Url is not calling my code,So i think i did a mistake on my config part. Please give me some suggestion

Thanks in advance...


Web Application Configuration:


PostMan Error:





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Discussion (12)3
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Hi Vikram,

Have you checked if you have granted privileges?

Best regards,

Francisco Lopez

Hi Francis,

 Yeah I added that. Then also I getting that same error.

Please post CROSRestAPI as text.

Can you get InterSystems IRIS or a complete version of Cache/Ensemble?

Service Unavailable error is because of license limitations on TRYCACHE.

Hi Eduard,


Class User.CROSRestAPI Extends %CSP.REST

Parameter CHARSET = "utf-8";

Parameter CONTENTTYPE = "application/json";

XData UrlMap [ XMLNamespace = "]
<Map Prefix="user/coffee" Forward="User.CROSRestAPI"/>
<Route Url="/CoffeeMaker" Method="POST" Call="CreateCoffee"/>
<Route Url="/CoffeeMaker:id" Method="PUT" Call="UpdateCoffee"/>

ClassMethod CreateCoffee() As %Status
CoffeeProp = ##class(User.PropertyName).%New()
Status = CoffeeProp.%Save()

And I have a complete version of Cache.

Review the cconsole.log and check if there is any problem with the license, also you can check Application errors log

Hi David,

Thanks for ur Comment.

           I have a license problem, That's why I am getting that error.

Also disable win firewall once you do resolve licence issue

Thank you Neerav 

I will do it, after i resolve my licence issue...

Fixed some issues in REST, but you have license problem.

ClassMethod CreateCoffee() As %Status

s json = {}.%FromJSON(%request.Data)
s CoffeeProp = ##class(User.PropertyName).%New()
s CoffeeProp.CoffeeName= json.CoffeeName
s CoffeeProp.CoffeeColor=json.CoffeeColor
s CoffeeProp.CoffeePrice= json.CoffeePrice
s Status = CoffeeProp.%Save()

Thanks for your support Eduard..

But what to do, I have a licence problem

I haven't tested to see if it matters, but I see that CreateCoffee() isn't returning a %Status. 

Fairytale bliss!!!

Now I got my expected output..smiley

Solution: I don't have license. But also I can run our Rest API in postman.

         "Our studio should be closed while testing our code on postman"

It is working fine for me angel

Thanks for your Support.