E14003 — NumberAvailabilityUnknown

We could not confirm whether this number is available. Please retry.

• HTTP status: 503
• Type: service_unavailable_error
• Name: NumberAvailabilityUnknown

What to do

This is temporary and not a decision about the number. Retry in a moment, or pick another number from the available list.

Related

• E14xxx — Numbers: 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