How do I fix VAST-2.0-mediafiles-unknown-child?

Remove the unrecognised element from ` ` — valid children are ` `, ` ` (4.1+), ` ` (4.0+), and ` ` (4.2+).

What does the VAST error " contains an unrecognised child element" mean?

` ` may contain ` `, ` ` (4.1+), ` ` (4.0+), and ` ` (4.2+). Other children are schema errors.

VAST-2.0-mediafiles-unknown-child

<MediaFiles> contains an unrecognised child element

ErrorSchemaIAB VAST 2.0 §2.4.1VAST 2.0 and later (all versions)

`<MediaFiles>` may contain `<MediaFile>`, `<Mezzanine>` (4.1+), `<InteractiveCreativeFile>` (4.0+), and `<ClosedCaptionFiles>` (4.2+). Other children are schema errors.

How to fix

Remove the unrecognised element from <MediaFiles> — valid children are <MediaFile>, <Mezzanine> (4.1+), <InteractiveCreativeFile> (4.0+), and <ClosedCaptionFiles> (4.2+).

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Other Schema rules

VAST-2.0-text-only-elementText-only element contains a child element VAST-2.0-unknown-attributeElement has an attribute not defined in the VAST spec VAST-2.0-inline-unknown-child<InLine> contains an unrecognised child element VAST-2.0-wrapper-unknown-child<Wrapper> contains an unrecognised child element VAST-2.0-creatives-unknown-child<Creatives> may only contain <Creative> elements VAST-2.0-creative-unknown-child<Creative> contains an unrecognised child element VAST-2.0-linear-unknown-child<Linear> contains an unrecognised child element VAST-2.0-trackingevents-unknown-child<TrackingEvents> may only contain <Tracking> elements