Skip to main content
Nintex Community Menu Bar

Xtensions for data lookup

  • March 20, 2026
  • 3 replies
  • 26 views

Forum|alt.badge.img+4

not sure what I did wrong on the xtension setup

[WorkflowExecution.TypeCasting.UnknownCasting] The specified value is unknown.

it is a simple

https://my website/workflow/services/nintex/dev.svc/GetCustomerName/{customer id}

and return json “customer name”

using api-key for security
 

3 replies

Forum|alt.badge.img+4
  • Author
  • Rookie
  • March 20, 2026

never mind found my issue. the rest api didn’t return with the variable name


Simon Muntz
Nintex Partner
Forum|alt.badge.img+23
  • Nintex Partner
  • March 23, 2026

Hi ​@RC1101,

I was going to say that your response returns a string, but your API is probably returning JSON.

Current:

"customerName": {"type": "string","description": "The name of the customer."}


Updated.

"CustomerResponse": { "type": "object", "properties": { "customerName": { "type": "string" } }


Forum|alt.badge.img+4
  • Author
  • Rookie
  • March 24, 2026

there already an object under schema. I was missing the customername from my rest api