Getting error when trying to fine tune a model in Azure AI Studio: Incorrect data formatting: Your data must include columns with the following labels: messages.

Question

I was attempting to fine-tune a gpt-4o-mini model in Azure AI Studio, using the fine-tune tool, but I encountered an error related to incorrect data formatting, when uploaded a file with own data, on the second stage.

"Incorrect data formatting: Your data must include columns with the following labels: messages."

Although my data is correct, I even checked the correctness on platform.openai.com service on fine-tuning, and it went fine! I also tried to upload the data exactly from Microsoft's documentation on fine-tuning, and got the same error! Please, help me overcoming this issue