E28020 — AMBEndpointNotHTTPS

This media or link URL must use HTTPS.

• HTTP status: 422
• Type: validation_error
• Name: AMBEndpointNotHTTPS

What to do

The response names the field. Supply a publicly accessible HTTPS URL for media and rich links. Custom iMessage app payload URLs are opaque and are exempt from this requirement.

Related

• E28xxx — Apple Messages for Business: every code in this range
• Errors: the full wire contract, status mapping, and error catalog
• Error handling: branching on type and code, validation details, and vendor_code