Restricted refund is a status that appears on the income tax portal when there is a name mismatch between the PAN and bank records. This means that the refund can be credited only up to a certain amount, usually 50 lakhs, due to the name mismatch. The name mismatch can occur when the name in the PAN does not match the name in the bank account. To resolve this issue, one can get their name rectified in the bank by submitting the necessary documents.