About GCash

GCash is a mobile wallet and online payment service in the Philippines. It is a versatile financial service platform that has become an integral part of the country's financial ecosystem. GCash allows users to perform a wide range of financial transactions using their smartphones. With a penetration rate of about 80% of the Philippine population, GCash is continuously growing.

It is a more accessible digital payment option compared to credit cards, as anyone with a mobile phone can use GCash services. Users only need to provide their phone number to begin transactions with GCash, eliminating the need for lengthy account numbers used by cards. Having GCash available as a payment method in the Philippines is recognized as one of the easiest ways to boost collection rates.

As discussed is HPP section, you need deal with the linking error with GCash when creating a payment method token with it.

GCash linking failure

"Code"	"Message"
INVALID_ACCOUNT_DETAILS	Request rejected due to invalid details provided. Please check the details. You may try again.
API_VALIDATION_ERROR	System Error - Payment Method Token cannot be created
ACCOUNT_ACCESS_BLOCKED	The account or card has been blocked. Please contact your bank or eWallet provider.
CUSTOMER_NOT_FOUND_ERROR	System Error - Payment Method Token cannot be created
MAX_ACCOUNT_LINKING	Your account has already been linked to the merchant. Please contact the merchant or eWallet provider if you need further assistance.
VA_NUMBER_OUT_OF_RANGE	System Error - Payment Method Token cannot be created
INVALID_API_KEY	System Error - Payment Method Token cannot be created
CHANNEL_NOT_ACTIVATED	System Error - Payment Method Token cannot be created
FEATURE_NOT_ACTIVATED	System Error - Payment Method Token cannot be created
FEATURE_NOT_SUPPORTED	System Error - Payment Method Token cannot be created
REQUEST_FORBIDDEN_ERROR	System Error - Payment Method Token cannot be created
DUPLICATE_ERROR	Your account has already been linked to the merchant. Please contact Ezypay or the merchant if you need further assistance.
IDEMPOTENCY_ERROR	System Error - Payment Method Token cannot be created
SERVER_ERROR	Server Error - Payment Method Token cannot be created
CHANNEL_UNAVAILABLE	The eWallet provider is experiencing unexpected issues - Payment Method Token cannot be created
OTP_DELIVERY_ERROR	Your eWallet provider has failed to send the OTP to you. Please try again later.
PAYMENT_METHOD_ALREADY_EXISTS	Your account has already been linked to the merchant. Please contact Ezypay or the merchant if you need further assistance.