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版本：1.x

API03002: Missing Required Parameters

What This Means​

The request is missing data that the server needs to complete the action. Required fields were not included in the request.

Common Causes​

  • Incomplete form — Required fields weren't filled in
  • Data not saved — Form data wasn't captured properly
  • Version mismatch — Plugin expects different parameters than the POS sends
  • Custom fields — Required custom fields are missing

How to Fix​

1. Complete Required Fields​

Check that all required information is filled in:

  • Customer details (if required)
  • Product information
  • Order details

2. Refresh and Retry​

The form state may be incomplete:

  1. Refresh the POS
  2. Re-enter the required information
  3. Try the action again

3. Check Plugin Versions​

Ensure compatibility:

  • Update the WCPOS plugin
  • Update the POS application
  • Both should be on compatible versions

4. Check Required Field Settings​

In WooCommerce, some fields may be marked as required:

  • Review checkout field requirements
  • Check custom field configurations
  • Adjust requirements if needed

5. Check Custom Integrations​

If using custom plugins or integrations:

  • They may require additional fields
  • Review plugin documentation
  • Check for conflicts