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workflows/Send an SMS using MSG91-511/readme-511.md
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workflows/Send an SMS using MSG91-511/readme-511.md
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Send an SMS using MSG91
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https://n8nworkflows.xyz/workflows/send-an-sms-using-msg91-511
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# Send an SMS using MSG91
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### 1. Workflow Overview
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This workflow is designed to send an SMS message using the MSG91 SMS gateway. It is triggered manually and then executes a single action block that sends an SMS through MSG91's API. This workflow is suitable for use cases where a user wants to test or manually send SMS messages via MSG91 within n8n.
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Logical blocks included:
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- **1.1 Manual Trigger:** Initiates the workflow on demand.
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- **1.2 SMS Sending:** Sends an SMS via MSG91 API using provided credentials and message parameters.
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---
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### 2. Block-by-Block Analysis
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#### 1.1 Manual Trigger
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- **Overview:**
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This block provides a manual entry point to start the workflow. It waits for the user to initiate execution.
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- **Nodes Involved:**
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- On clicking 'execute'
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- **Node Details:**
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- **Node Name:** On clicking 'execute'
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- **Type:** Manual Trigger
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- **Role:** Triggers workflow execution on user command
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- **Configuration:** No parameters required; simply waits for manual start
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- **Key expressions/variables:** None
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- **Input/Output:** No input; output connected to "Msg91" node
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- **Version Requirements:** Compatible with n8n core version supporting manual trigger node (version 1 or later)
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- **Potential Failure Modes:** None (manual trigger is straightforward)
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- **Sub-workflow:** None
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#### 1.2 SMS Sending via MSG91
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- **Overview:**
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This block sends an SMS message using the MSG91 node configured with necessary parameters and credentials.
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- **Nodes Involved:**
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- Msg91
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- **Node Details:**
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- **Node Name:** Msg91
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- **Type:** MSG91 SMS Node
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- **Role:** Sends SMS messages using MSG91 API
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- **Configuration Choices:**
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- **To:** Empty string (user must fill with recipient phone number)
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- **From:** Empty string (user must fill with sender ID)
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- **Message:** Empty string (user must enter SMS content)
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- **Credentials:** MSG91 API credentials must be set up and linked to this node
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- **Key expressions/variables:** None by default; user can replace empty strings with expressions or static values
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- **Input:** Receives trigger from manual trigger node
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- **Output:** Outputs response from MSG91 API about SMS send status
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- **Version Requirements:** Compatible with MSG91 node version 1 or later
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- **Potential Failure Modes:**
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- Authentication failure due to invalid or missing API credentials
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- Network timeout when calling MSG91 API
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- Invalid phone number or message causing API rejection
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- Missing required parameters (To, From, Message) resulting in error
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- **Sub-workflow:** None
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---
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### 3. Summary Table
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| Node Name | Node Type | Functional Role | Input Node(s) | Output Node(s) | Sticky Note |
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|---------------------|--------------------|--------------------------|------------------------|----------------|----------------------------------|
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| On clicking 'execute'| Manual Trigger | Initiates workflow | None | Msg91 | |
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| Msg91 | MSG91 SMS Node | Sends SMS via MSG91 API | On clicking 'execute' | None | Sending an SMS using MSG91 |
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---
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### 4. Reproducing the Workflow from Scratch
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1. **Create Manual Trigger Node**
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- Add a new node of type **Manual Trigger**.
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- This node requires no parameters. It will be the starting point of the workflow.
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2. **Add MSG91 Node**
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- Add a new node of type **MSG91 SMS**.
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- Configure the following parameters:
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- **To:** Enter the recipient phone number in international format (e.g., +919999999999).
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- **From:** Enter the sender ID registered with MSG91 (alphanumeric or numeric sender ID).
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- **Message:** Enter the SMS content text to send.
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- Set up the **MSG91 API Credentials** in n8n Credentials section:
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- Create new MSG91 API credentials with your MSG91 API key.
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- Link these credentials to the MSG91 node.
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3. **Connect Nodes**
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- Connect the output of the Manual Trigger node to the input of the MSG91 node.
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4. **Save and Activate Workflow**
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- Save the workflow.
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- Optionally, activate it for scheduled or event-based triggering.
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- For manual execution, use the "Execute Workflow" button.
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5. **Test Sending SMS**
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- Click "Execute Workflow" manually to trigger the SMS sending.
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- Monitor the MSG91 node output for success or error messages.
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---
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### 5. General Notes & Resources
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| Note Content | Context or Link |
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|-----------------------------------------------------------|----------------------------------------------------|
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| MSG91 is a reliable SMS gateway service commonly used for transactional SMS | https://msg91.com |
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| Ensure phone numbers are in E.164 international format for MSG91 compatibility | MSG91 API Documentation |
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| n8n MSG91 node requires valid API credentials to function | n8n Credentials configuration for MSG91 |
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---
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This document fully describes the "Send an SMS using MSG91" workflow, enabling users to understand, reproduce, and maintain it efficiently.
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