FlowiseAI/Flowise · warning · Error

At least one field to update must be provided

Error message

At least one field to update must be provided

What it means

Thrown INSIDE the try block of UpdateChannelTool._call (core.ts:256) when both displayName and description are absent, so the constructed body object is empty. Unlike the ID checks above, this throw IS caught by the catch at core.ts:270 and converted into a formatResponse error string — so the tool returns a string like '{"...":"Error updating channel: Error: At least one field to update must be provided"}...{...params}' rather than rejecting. Callers must JSON-parse and inspect the success/error shape, not just await the call.

Source

Thrown at packages/components/nodes/tools/MicrosoftTeams/core.ts:257

        super({ ...toolInput, accessToken: args.accessToken, defaultParams: args.defaultParams })
    }

    protected async _call(arg: any): Promise<string> {
        const params = { ...arg, ...this.defaultParams }
        const { teamId, channelId, displayName, description } = params

        if (!teamId || !channelId) {
            throw new Error('Both Team ID and Channel ID are required')
        }

        try {
            const body: any = {}
            if (displayName) body.displayName = displayName
            if (description) body.description = description

            if (Object.keys(body).length === 0) {
                throw new Error('At least one field to update must be provided')
            }

            const endpoint = `/teams/${teamId}/channels/${channelId}`
            await this.makeTeamsRequest(endpoint, 'PATCH', body)

            return this.formatResponse(
                {
                    success: true,
                    message: 'Channel updated successfully'
                },
                params
            )
        } catch (error) {
            return this.formatResponse(`Error updating channel: ${error}`, params)
        }
    }
}

View on GitHub (pinned to abe4a8601a)

Solutions

1. Pass at least one of displayName or description as a non-empty string.
2. At the call site, short-circuit: if (!newDisplayName && !newDescription) return skip.
3. Parse the tool's return string and check for an 'Error updating channel' marker before treating the call as successful.
4. Refactor: move this check above the try block and throw, so all validation errors behave consistently.

Example fix

// before — throw inside try, swallowed into a response string
if (Object.keys(body).length === 0) {
    throw new Error('At least one field to update must be provided')
}

// after — guard before constructing the request, return a structured error
if (!displayName && !description) {
    return this.formatResponse(
        { success: false, error: 'At least one field to update must be provided' },
        params
    )
}

function shouldUpdateChannel(input: { displayName?: string; description?: string }): boolean {
  return Boolean((input.displayName && input.displayName.trim()) || (input.description && input.description.trim()))
}

// usage
if (!shouldUpdateChannel(input)) {
  return { success: true, message: 'No fields to update; skipping' }
}

function hasChannelUpdateField(x: unknown): boolean {
  if (typeof x !== 'object' || x === null) return false
  const { displayName, description } = x as any
  return (typeof displayName === 'string' && displayName.trim() !== '') ||
         (typeof description === 'string' && description.trim() !== '')
}

// This error is swallowed into a response string, so parse instead of catch
const raw = await updateChannelTool.invoke(input)
const parsed = JSON.parse(raw.split(TOOL_ARGS_PREFIX)[0])
if (!parsed.success || /Error updating channel/.test(JSON.stringify(parsed))) {
  // handle the no-op case
}

When it happens

Trigger: update_channel invoked with valid IDs but with neither displayName nor description; both optional fields explicitly set to undefined or empty string; defaultParams provides only IDs.

Common situations: Agent calls update_channel to 'change something' without specifying what; UI no-op submit; replay/restore script that diffs and finds no diff but calls update anyway.

Related errors

• Both Team ID and Channel ID are required
• Team ID and Display Name are required to create a channel
• Team ID, Channel ID, and User ID are all required
• User is not a member of this channel
• Topic is required to update a chat

AI-assisted analysis of FlowiseAI/Flowise@abe4a8601a (2026-08-12). Data as JSON: /api/errors/b28c05c734a4b6df. Report an issue: GitHub.