---
title: "Debugging"
manual: "External Import"
version: "main"
permalink: "https://docs.typo3.org/permalink/cobweb/external_import:user-debugging@main"
source: "User/Debugging/Index.rst"
rendered: "2026-10-17T19:10:20+00:00"
---

# Debugging {#user-debugging}

There are many potential sources of error during synchronization, from
wrong mapping configurations to missing user rights to PHP errors in
user functions. When a synchronization is launched from the BE module
a status is displayed when the operation is finished.

The extension tries to report at best on the success or failure of the operation.
Turning on the "debug" mode (see the [Configuration chapter](https://docs.typo3.org/permalink/cobweb/external_import:installation-configuration@main))
will provide additional information.

As described in the [Configuration chapter](https://docs.typo3.org/permalink/cobweb/external_import:installation-configuration@main),
it is also possible to receive a detailed report by email.
It will contain a general summary of what happened during synchronization,
but also all error messages logged by the TYPO3 Core Engine, if any.