# Send typing indicator (Chat) (deprecated)

Deprecated. Use Send typing indicator (v2), which resolves sender/recipient from the participant (you pass only participantId). Retained only for existing integrations.

Show a typing indicator to the customer from the chat agent.

Endpoint: POST /pl4chat-service/Message/sendTypingIndicator
Version: 3.0.0
Security: apikeyAuth

## Request fields (application/json):

  - `senderNumber` (string, required)
    Example: "+1234567890"

  - `recipientNumber` (string, required)
    Example: "+9876543210"

  - `messageId` (string,null)
    The ID of the last message received from the recipient. Required when using the Meta Cloud API to identify the conversation context. Can be omitted for WhatsApp Lite.
    Example: "wamid.HBgNMjc4MjEyMzQ1Njc4FQIAEhgg"

## Response 401 fields (application/json):

  - `status` (string)
    Example: "ERROR"

  - `message` (string)
    Example: "Unauthorized user"

  - `requestId` (string)
    Example: "c3a1f8e2-4b6d-11ee-be56-0242ac120002"

  - `timestamp` (string)
    Example: "2026-01-15T10:30:00Z"


## Response 200 fields