# 422 - Unprocessable Operation

## Description

Ratepay declines requests which would lead to an invalid transaction state or inconsistent transaction.

## Error Handling

The sender receives information about the cause of the decline and can retry after correcting.
For One time passcode enablement, please contact your technical contact person at Ratepay or send an e-mail to integration@ratepay.com.

## Example

Capture request contains a higher amount than authorized.

## Possible API Calls

* Authorization
* Incremental Authorization
* Cancellation
* Capture
* Refund


## Reasons

* BASKET_WITH_UNKNOWN_SHOP
* CANCELLATION_AMOUNT_TOO_HIGH
* CAPTURE_AMOUNT_TOO_HIGH
* MULTIPLE_RETURN_FEES_NOT_ALLOWED
* MULTIPLE_SHOP_BASKETS_WITH_SAME_SHOP_NOT_ALLOWED
* MULTIPLE_VAT_OBJECTS_PER_TAX_RATE_NOT_ALLOWED
* NOT_ALLOWED_FOR_DECLINED_TRANSACTION
* NOT_ALLOWED_FOR_EXPIRED_TRANSACTION
* PARTNER_SHOP_ID_MUST_BE_GIVEN_FOR_MARKETPLACE_TRANSACTIONS
* REFUND_AMOUNT_TOO_HIGH
* OTP_VERIFICATION_REQUIRED_BUT_FEATURE_NOT_ENABLED
* [SUM_OF_ITEM_AMOUNTS_NOT_MATCHING_OPERATION_AMOUNT](/docs/developer/api_integration/payment_2.0/basket_validation/)
* [SUM_OF_ITEM_AMOUNTS_NOT_MATCHING_TRANSACTION_AMOUNT](/docs/developer/api_integration/payment_2.0/basket_validation/)