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T3 Stack · Error

TRPCError

TRPCError represents an error raised by a tRPC procedure. The documented pattern uses it with the UNAUTHORIZED code when authentication middleware finds no user.

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Syntax

new TRPCError({ code: "UNAUTHORIZED" })

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  • TRPC
  • protectedProcedure
  • TRPCError
  • UNAUTHORIZED
  • getHTTPStatusCodeFromError
  • createCaller

Source: tRPC • Create T3 App. Checked 2026-11-03.