Editing Add/edit contacts with the API (section)

== FAQ ==
'''Q1: What is the primary purpose of the '''contact_sync''' API call?'''
A1: The '''contact_sync''' API call allows you to add or edit a contact based on their email address without needing to check if a contact exists first.

'''Q2: Can I add multiple contacts at once with this API?'''
A2: The '''contact_sync''' API call is intended for one contact per request. For batch operations, consider using other API methods or looping through an array of contacts.

'''Q3: What output formats does the '''contact_sync''' API support?'''
A3: The supported output formats for '''contact_sync''' are xml, json, and serialize.

'''Q4: Do I need any specific permissions to access the API?'''
A4: Ensure that your ActiveCampaign account has API access permissions enabled.

'''Q5: Is there a limit to the number of contacts I can sync in a day?'''
A5: Yes, be aware of your API limits as outlined in your ActiveCampaign account documentation to avoid throttling.

'''Q6: What happens if I try to sync a contact that does not exist?'''
A6: If the contact does not exist, the '''contact_sync''' will create a new contact under the provided email.

'''Q7: Can I remove contacts using the '''contact_sync''' API?'''
A7: The '''contact_sync''' API is used exclusively for adding and editing contacts. To delete contacts, you would use a different API call.
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