If Google Business Profile repeatedly returns a server error during phone verification and no verification code is sent, first confirm that the business phone number is eligible and that the problem is not caused by the device, network, carrier, or call/SMS setup.
If the same error occurs across different devices, accounts, and networks, repeated attempts are unlikely to solve an underlying Google-side verification problem. Document the error, including screenshots, dates, and the verification methods available in the account, and use Google's available support or appeal route to request assistance.
For Service Area Businesses, also make sure the profile's business information is accurate and consistent before requesting another verification attempt. Google requires businesses to pass its screening and verification process, and the available verification methods can vary depending on the business and circumstances.
If Google specifically instructs you to complete another verification method but that method is not available in the account, mention that discrepancy to support rather than repeatedly submitting the same failed phone verification request. The forum case describes exactly this situation, with phone verification returning the same server error for eight days while the previously used video method was no longer available.