---
title: Why can't I upload my list?
description: If you're facing issues uploading your list to the Apifon platform, here are some common reasons and solutions to help you resolve the problem.
---

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# Why can't I upload my list?

## If you're facing issues uploading your list to the Apifon platform, here are some common reasons and solutions to help you resolve the problem.

Possible Reasons for Upload Failure

1. **Large file size during quick upload**  
   The file you are trying to upload with quick upload during the campaign design exceeds the maximum size limit of 10MB.
2. **Too many recipients during quick upload**  
   Your list contains more than 400,000 recipients, exceeding the platform's limit with quick upload during the campaign design.
3. [**Incorrect data entry**](https://kb.apifon.com/why-cant-i-upload-my-list#data-entry)  
   Errors in the file's data structure.
4. **Column mismatch**  
   The columnsof your file with the list's columns do not match. For example, placing email data in the Mobile column may prevent the file from uploading.
5. [**Unsupported file format**](https://kb.apifon.com/why-cant-i-upload-my-list#Unsupported-File-Format)  
   The file is not saved in one of the supported formats.

**How to correctly enter your data in the file**

Ensure your file adheres to the following guidelines for a successful upload:

1. **No Blank Cells or Rows**  
   Avoid leaving blank cells or rows within your data. Blank areas may cause the platform to stop processing the file.
2. **Use a Single Sheet**  
   Include all data on the first sheet of your file. Additional sheets will not be detected.
3. **Unique Subscriber Records**  
   Ensure each subscriber's data (e.g., name, number, etc.) is listed only once. Duplicate records will be automatically excluded.
4. **Remove Functions and Formats**  
   Delete any mathematical formulas, filters, or functions in the file. If exporting from another system, select all data in the file (Ctrl + A) and clear formats by choosing **Clear \> Clear Formats** in the Excel toolbar.

**Supported file formats**

The following file formats are supported:

- `.xlsx`
- `.xls`
- `.csv` (,)
- `.csv` (;)

Now you know how to resolve any issues when uploading your list to the Apifon platform! 🚀

Thank you for reading! 😊 

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