# Ingestion checks

Ingestion checks are programmed processes that will block an object from ingestion if it does not comply with certain set conditions. Said conditions are established in a submission agreement, which includes the definition of an SIP (*submission information package*), and they are configured through a preservation plan.

They are established at object root folder, folder and file level. Ingestion checks may have a regular expression (RegEx) associated to them, in order to facilitate the selection of the objects, folders or files to which we will apply the following, according to the type of check:

* In case of ***checks at object root folder level***, the expression is applied to the name of the object folder or, similarly, to its name.
* In case of ***checks at folder level*****,** the expression is applied to the name of the folder, not including the previous complete path; that is, for subfolders, the top levels are not part of the chain to which the regular expression is applied.
* In case of ***checks at file level*****,** the expression is applied only to the file name, regardless of its relative path.

A standard installation includes checks to guarantee the existence of files by type, sequential numbering, maximum object and folder size, existence of particular paths, file count, etc.  

In the main screen of the ingestion checks, the different ingestion checks available for the above mentioned types are listed. In the list, we can see name, status (active / inactive), the ingestion check detail and we can access its edit.

![](/files/-MjjQWj6_FThqvwGDGWL)

![](/files/-MjjQZG-HbIq4AbZeGIW)

![](/files/-MjjQbJE5FOwrapMe9nM)

The function and particular use of every ingestion check can be consulted in its detail record, although there is a reference to the main ones further along in this document.     


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