public async Task <(bool isSuccessful, string errorMessage)> ConfirmAsync(string referralCode, Guid referredId)
        {
            Domain.Models.Referral referrer;

            try
            {
                referrer = await _referralService.GetReferralByReferralCodeAsync(referralCode);
            }
            catch (CustomerNotFoundException e)
            {
                _log.Warning(message: e.Message, exception: e);
                return(true, string.Empty);
            }

            var referred = await _customerProfileClient.CustomerProfiles.GetByCustomerIdAsync(referredId.ToString("D"), true);

            if (referred.ErrorCode == CustomerProfileErrorCodes.CustomerProfileDoesNotExist)
            {
                return(false, $"Connector with id '{referredId}' does not exist.");
            }

            var referredFiendProfile =
                await _customerProfileClient.ReferralFriendProfiles.GetByEmailAndReferrerAsync(new ReferralFriendByEmailAndReferrerProfileRequest
            {
                Email      = referred.Profile.Email,
                ReferrerId = referrer.CustomerId
            });

            var friendReferral =
                await _friendReferralHistoryRepository.GetByIdAsync(referredFiendProfile.Data.ReferralFriendId);

            if (friendReferral == null)
            {
                return(false, $"Referral not found for referred '{referredId}' and referrer '{referrer.CustomerId}'");
            }

            // Generating a referral code for the new referral
            await _referralService.CreateReferralForCustomerIfNotExistAsync(referredId);

            friendReferral.State      = ReferralFriendState.Accepted;
            friendReferral.ReferredId = referredId;

            await _friendReferralHistoryRepository.UpdateAsync(friendReferral);

            _log.Info("Referral friend confirmed", context: $"referralFriendId: {friendReferral.Id}");

            return(true, string.Empty);
        }