---
schema_version: "1"
id: fc59b245163f8e46dc136e74badd1d91ae00dda70bc017c5c0bc355bf23c5d44
title: Ayden Terminal Known Issues and Restrictions
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/commerce/264-0-0/rt_cms_hardware_ayden_terminal_known_issues.md
canonical_url: https://help.salesforce.com/s/articleView?id=commerce.rt_cms_hardware_ayden_terminal_known_issues.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 79358ed38b201a40c571782462c5f8811b96b1f380d5f5aed36882037eb5a0ef
description: Understand the limitations and known issues if using Adyen payments.
products:
  - Commerce
release: "264"
---
# Ayden Terminal Known Issues and Restrictions

Understand the limitations and known issues if using Adyen payments.

## Cardholder Verification Methods (CVM) Limits

Minimum payment amounts aren’t configurable within Modern POS or our CMS. They’re dependent on a variety of factors, such as payment networks and customer regions.

## Refusal Reasons

Refusal reasons displayed in Modern POS as to why a transaction wasn’t completed are provided by the terminal. These reasons aren’t configurable in Modern POS or CMS.

## Payment Reader Not Reading Chip

Make sure the card is inserted into the payment reader correctly. The end of the card with a metallic square has to be inserted into the payment reader.

## Payment Terminal Topology

Prior to version 8.4.1, payment terminal topology can only be configured at the store level. Modern POS versions 8.4.1 and onwards added support to configure payment terminal configuration at register level.

## Localization

The language presented in the terminal settings is determined by the Adyen console. The language isn’t configurable via Modern POS or CMS.

## Funding Source

If the terminal has a network issue connecting to Adyen cloud, then funding sources won’t be returned to the POS. As a result, funding source attributes can be missing in TLOG for credit card payments performed in a terminal offline state.

## Partial Payments

Adyen has the concept of Partial Payments, however we aren’t using it. Insufficient funds always result in a decline. You can find the risks and limitations [here](https://docs.adyen.com/point-of-sale/partial-payments/).

## Store and Forward (SAF)

For Adyen terminals with cellular capability, offline (SAF), transactions exceeding configured limits attempt to go online for processing. If the device can’t reach Adyen servers, an error message displays: “**Failed to go Online.**”

For devices with 4G (ASM1, SF01), turn off 4G by asking Adyen support. Salesforce doesn’t support failover between Wi-Fi and cellular networks.