# Transaction Processing Guidelines

> Defines transaction processing flows for User-Presented Mode (UPM) and Merchant-Presented Mode (MPM) from the acquiring partner's operational perspective.

## For payment codes (UPM)

For detailed product introduction and integration guides, see [User-presented Mode Payment](../product_intro_acq/product_upm_acq) and [Integration overview](../integration_user_mode_acq).

## For collection codes (MPM)

For detailed product introduction and integration guides, see [Merchant-presented Mode Payment](../product_intro_acq/product_mpm_acq) and [Integration overview](../integration_merchant_mode_acq).