Billing phone number

[webnative]

I'm getting a response saying 'billing phone number is required' when processing credit card payment. I thought that this field is optional. Is the billing phone number required for all payment processing? or is this something that can be disable in Authorize.net merchant account settings?

[RaynorC1emen7]

Account-Settings-Payment Form-Form Fields. Uncheck the required check box for bill to phone#.

[webnative]

@Raynor: the phone required check box is already uncheck but still giving me the same message. Any idea where else this could be disabled? Thanks for you help.

[RaynorC1emen7]

What the response code and response reason code are you getting? and which api are you using?