Update an existing custom field. You can update the label, description, required status, default value, and choices.

Important Notes:

• Field name and fieldType cannot be changed after creation
• When updating choices for dropdown or multi_select fields, provide the complete new array
• Changing appliesTo will affect which entities can use this field

Common Updates:

Update Label:

{
  "label": "Updated Label"
}

Update Dropdown Choices:

{
  "choices": ["New Option 1", "New Option 2", "New Option 3"]
}

Make Field Required:

{
  "required": true
}