> ## Documentation Index
> Fetch the complete documentation index at: https://backstage.spotify.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Well-known Status fields of Catalog Entities

> Lists a number of well known entity statuses, that have defined semantics. They can be attached to catalog entities and consumed by plugins as needed.

This section lists well known
[entity statuses](./descriptor-format#common-to-all-kinds-status), that have
defined semantics. They can be attached to catalog entities and consumed by
plugins as needed.

If you are looking to extend the statuses, see
[Extending the model](https://backstage.io/docs/features/software-catalog/extending-the-model).

## Common Fields

The `status` object of an entity is currently left unrestricted, except for the
`items` field. Its structure is defined in the
[descriptor format](./descriptor-format#common-to-all-kinds-status) section.

We reserve the right to extend this model in the future. This status is in
active development and its format will change unexpectedly. Do not consume it in
your own code until such a time that this documentation has been updated.

## Status Item Types

This is a (non-exhaustive) list of `status.items.[].type` values that are known
to be in active use.

### `backstage.io/catalog-processing`

Expresses an aspect of the current status of the catalog's ingestion of this
entity. Errors that may appear here include inability to read from the remote
SCM provider, syntax errors in the YAML file, and similar.

Note that the entity data itself may be of an older version, when errors are
present. The ingestion system keeps the old valid entity data untouched when
possible, so the errors described in this state may not seem to align with the
rest of the entity, because they pertain to a remote that could not be
successfully ingested. This is normal.

```yaml theme={"theme":{"light":"github-light","dark":"dracula"}}
# Example:
status:
  items:
    - type: backstage.io/catalog-processing
      level: error
      message: 'NotFoundError: File not found'
      error:
        name: NotFoundError
        message: File not found
        stack: ...
```