You are encountering a procedural limitation on the Income Tax e-Filing Portal wherein removal of a "failed" bank account requires e-verification, which is not feasible in your case due to absence of Aadhaar linkage and your status as a joint (non-primary) account holder.
As per applicable procedure, such verification is mandated to ensure authenticity of banking changes. However, there is no statutory requirement under the Income-tax Act mandating deletion of a failed account for filing a return.
In such circumstances, the following legally compliant options may be considered:
First, if your valid bank account is already pre-validated and designated for refund purposes, you may proceed with filing your return by selecting only that account. In many cases, the system permits continuation despite prompts to remove the failed account.
Second, you may raise a grievance through the portal under the appropriate category relating to pre-validated bank accounts, clearly stating that you are a joint holder, lack access to EVC generation, and are unable to complete Aadhaar-based verification. A request for backend removal or delinking may be made.
Third, you may contact the Income Tax Department helpdesk via email, providing relevant details such as PAN and screenshots of the issue. The department may, upon verification, facilitate manual resolution.
Alternatively, adding and validating another bank account in which you are the primary holder may mitigate the issue and allow seamless filing.
Accordingly, so long as a valid bank account is duly pre-validated and selected for refund credit, you may proceed with filing without legal impediment.