> For the complete documentation index, see [llms.txt](https://docs.digitalriver.com/commerce-api-references/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.digitalriver.com/commerce-api-references/warnings-and-error-codes/error-codes/error-codes-for-shopper-apis/500-internal-server-error.md).

# 500 Internal Server Error

Understand the 500 Internal Server Error error codes for the Shopper APIs.

The `500 Internal Server Error` message appears when the server encounters an unexpected problem that prevents it from fulfilling a request. This error can occur for various reasons, such as server misconfigurations, software conflicts, or resource limitations. It can be challenging to understand what went wrong because the error message provides little information. However, server logs can offer more detailed insights into the root cause of the error.

## `internal-payment-error`

An internal server error occurred. Try again later.

## `system-error`

An unexpected system error occurred. Try again later.