In VPayment web, go to Administration → Public and Private Keys, select Register Keys, and confirm Register and download.The LlavesSHA2.zip file contains the merchant keys:
*_PASARELA_*.txt: SHA-2 key used to sign and validate VPOS operations.
*_WALLET_*.txt: use it only if Wallet was enabled by the sales advisor.
Public and private RSA files: not required for this integration.
Registering new keys immediately replaces the current keys. Store the ZIP securely and regenerate only when necessary or according to the merchant security policy.