Abstract: Methods, systems, and computer program products for implementing a payment integration process for travel management systems. A payment integration request associated with a payment identification from a travel provider system is received. Payment transaction data associated with the payment identification from a payment gateway using the payment identification is obtained. Travel records data associated with the payment identification from a reservation system is obtained. Payment integration data associated with the payment identification is determined by performing a sanity check of the payment transaction data and the travel record data, validating the payment transaction data and the travel record data, and generating the payment integration data based on the sanity check and the validation of the payment transaction data and the travel record data. Payment integration data to be integrated into the travel record is provided.