Frequently Asked Questions

To upload data to CMMI-DCC:

1. Navigate to Upload Data: Click on "Upload Data" in the top navigation menu

2. Select Data Type: Choose the appropriate data type (CBC, Metabolomics, etc.)

3. Download Template: Click "Download Example" to get the correct CSV template for your data type

4. Prepare Your Data: Fill in the template with your data, ensuring all required columns are complete

5. Upload: Click "Choose File" and select your completed CSV file

6. Preview & Confirm: Review the preview of your data to ensure it was parsed correctly, then click "Confirm" to submit

The system will validate your data and notify you of any errors. For omics data, you may need to provide additional metadata after the initial upload.

If your data upload fails validation, follow these steps:

1. Review Error Messages: The system will display specific error messages indicating which rows or columns have issues

2. Common Issues:

   • Missing required columns (CMMI ID, measurement values, etc.)
   • Invalid CMMI IDs (participant not found in database)
   • Incorrect date formats (use YYYY-MM-DD)
   • Duplicate entries
   • Values outside expected ranges

3. Fix Your Data: Download your original file, correct the errors, and re-upload

4. Use the Template: Always start with the official template from the "Download Example" button to ensure correct formatting

5. Contact Support: If you continue to have issues, contact the CMMI-DCC team with your error messages and data file