VMAP-1.0-adbreak-breaktype-value
VMAP-1.0-adbreak-breaktype-value
`<AdBreak>` breakType must be a comma-separated list of `"linear"`, `"nonlinear"`, or `"display"`
ErrorVMAPIAB VMAP 1.0.1 §2.3.1VMAP 1.0 (all VMAP documents)
Short answer
The breakType attribute must contain only the values linear, nonlinear, and/or display (comma-separated). Any other value is invalid and will prevent the player from recognising the break type.
Why this matters in production
This rule is usually a delivery blocker. Many players, SDKs, and ad servers will discard the response or skip the affected creative once this condition is hit. VMAP rules validate the ad break schedule envelope. Malformed break timing, wrong namespace declarations, or invalid AdSource content prevent players from resolving any of the ads in the playlist. Affected scope: VMAP 1.0 (all VMAP documents).
Invalid
<vmap:AdBreak timeOffset="start" breakType="preroll">Valid
<vmap:AdBreak timeOffset="start" breakType="linear">Check your VAST tag for
VMAP-1.0-adbreak-breaktype-value and other issues instantly.Open the VAST tag validator →Other VMAP rules
VMAP-1.0-root-versionRoot `<VMAP>` element must have a version attributeVMAP-1.0-root-version-value`<VMAP>` version attribute should be `"1.0"` — the only published VMAP versionVMAP-1.0-root-namespace`<VMAP>` should declare the VMAP namespace URI http://www.iab.net/videosuite/vmapVMAP-1.0-root-unknown-child`<VMAP>` may only contain `<AdBreak>` and `<Extensions>` elementsVMAP-1.0-adbreak-timeoffset`<AdBreak>` must have a timeOffset attributeVMAP-1.0-adbreak-timeoffset-format`<AdBreak>` timeOffset must be hh:mm:ss[.mmm], n%, `"start"`, `"end"`, or #mVMAP-1.0-adbreak-breaktype`<AdBreak>` must have a breakType attributeVMAP-1.0-adbreak-repeatafter-format`<AdBreak>` repeatAfter does not match the required hh:mm:ss[.mmm] format