Australia | Alphanumeric Sender ID Registration - EMSP Partner (Bulk) Flow

This guide walks you through how to register multiple alphanumeric sender IDs in bulk when you're an EMSP (Electronic Messaging Service Provider) Partner registering on behalf of your end customers. It explains how to download the template, populate customer data, validate records, handle errors, and submit valid registrations. You'll also learn what to expect after submission and how to track registration status.

Getting started

Navigate to Settings > Numbers and click Apply for ACMA registration, then select Bulk ACMA Registration.

The bulk registration wizard has 5 steps:

1. Your Business Details

2. Download Template

3. Upload & Validate

4. Review & Submit

5. Complete

Registration Process

Step 1: Enter your business details (EMSP Partner)

First, you'll provide information about your EMSP Partner organization. You only need to complete this step once - the details are saved for future bulk registrations.

 

 

Pre-filled information (read-only)

The system automatically retrieves your business information from the Australian Business Register:

• EMSP Partner ABN - Your organization's ABN

• EMSP Partner Legal Entity Name - Your registered company name

Required fields

Complete the following fields for your organization:

• EMSP Partner Business Address - Enter your registered business address. Suggestions will appear as you type. Select your official head office address.

• Business Website URL - Use the official website for the legal entity listed above.

• Business Phone Number - Provide a generic business contact number (not tied to an individual).

Authorized representative

• Authorized Representative Name - Full name of the authorized contact

• Authorized Representative Email - Business email address

• Authorized Representative Phone - Mobile or business phone number

Click Save and Continue to proceed.

Step 2: Download template

Download the working file that contains your existing sender IDs requiring registration.

What's included in this file:

Click Download working file (.csv) to save the template.

Click Continue to upload when ready.

Step 3: Complete the template

Open the downloaded CSV file in your preferred spreadsheet application (Excel, Google Sheets, etc.).

Template columns

Save your completed file as a CSV before uploading.

Step 4: Upload & validate

Upload your completed CSV file for validation.

1. Drag and drop your file or click to browse

2. Supports .csv files only (max 10 MB)

3. Click Validate file

What we validate

The system validates each record against:

• Required fields - Ensures all mandatory columns are populated

• Domain ownership - Verifies website domains match business details

• External services - Checks ABN validity against Australian Business Register

• Sender ID format - Validates format rules (3-11 characters, starts with letter, alphanumeric only)

• Sender ID match - Checks if sender ID matches the customer's registered business name, entity name, trademark, or domain

Validation progress

While validation runs, you'll see:

• Total sender IDs detected

• Records eligible for validation

• Records skipped (missing required fields)

• Processing progress (e.g., "Processing row 4 of 16...")

Step 5: Review validation results

After validation completes, you'll see a summary of results.

Validation complete summary:

Valid records

These records passed all ACMA validation checks and are ready to submit.

Click Submit [X] records to proceed with valid records.

Records requiring correction

These records need updates before they can be submitted. Common issues include:

• Format errors - Problems in the file (format or missing required information)

• Sender ID validation errors - The sender ID may not match the business details on file

Common validation error messages:

Export validation results

Click Export validation results (.csv) to download a detailed error report showing:

• Row-by-row correction reasons

• Blocking reasons for each failed record

• Validation status per record

• Review outcome recommendations

More detail on the validation error please refer to Bulk Sender ID Registration - Error Reference Guide

Click Back to upload to fix errors and re-upload, or proceed with valid records only.

Step 6: Review & submit

Once you click submit, the system processes each eligible record.

Submission progress

• "Submitting 1 of X sender IDs..."

• You can leave this page — submission will continue in the background

Click Continue to summary when complete.

Step 7: Submission complete

After successful submission, you'll see the submission summary.

Submission summary

Submission received confirmation

Your [X] sender ID registrations have been received. Your submission will undergo internal review before submission to ACMA.

What happens next

After submission, your registrations follow this process:

Customer approval readiness

Delays may occur if ACMA Assist access has not been configured in advance.

Learn more about ACMA Assist setup → Australia | How Alphanumeric Sender ID registration works with Sinch Engage

Viewing your registration status

You can check your sender ID registration status at any time:

1. Go to Settings > Numbers

2. View the Alphanumeric sender IDs section

Available statuses

Download status report

You can download a CSV export of all sender IDs with their current registration status for tracking and customer communication.

Tips for successful bulk registration

Recommended batch sizes

We recommend submitting approximately 200 records per batch, especially for initial submissions. This allows:

• Faster feedback loop to identify and fix issues

• More manageable processing for our compliance team

• Quicker turnaround on approvals

You can increase batch sizes once the process is proven and running smoothly.

Preparing your data

1. Collect accurate customer details - Ensure ABN, business name, and contact details are correct

2. Verify authorized contacts - Confirm each customer's authorized representative can approve in ACMA Assist

3. Match sender IDs to business names - Ensure each sender ID aligns with the customer's registered entity name, business name, trademark, or domain

4. Use valid formats - Sender IDs must be 3-11 characters, start with a letter, and contain only alphanumeric characters

Handling validation errors

1. Download the validation error report

2. Review each error reason

3. Correct the data in your working file

4. Re-upload the corrected file

5. Valid records from previous uploads are not affected

Related guides

• Australia | Alphanumeric Sender ID Registration - EMSP Partner (Single) Flow

• Australia | Upcoming changes to alphanumeric sender ID registration and usage

• What happens when you register a Sender ID?

• ACMA Assist setup guide