VMAP-1.0-adbreak-timeoffset-format
VMAP-1.0-adbreak-timeoffset-format
`<AdBreak>` timeOffset must be hh:mm:ss[.mmm], n%, `"start"`, `"end"`, or #m
ErrorVMAPIAB VMAP 1.0.1 §2.3.1VMAP 1.0 (all VMAP documents)
Short answer
The timeOffset value must be one of: a timecode (hh:mm:ss or hh:mm:ss.mmm), a percentage (n%), the keywords start or end, or a position marker (#m). Any other format cannot be parsed by players.
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).
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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-breaktype`<AdBreak>` must have a breakType attributeVMAP-1.0-adbreak-breaktype-value`<AdBreak>` breakType must be a comma-separated list of `"linear"`, `"nonlinear"`, or `"display"`VMAP-1.0-adbreak-repeatafter-format`<AdBreak>` repeatAfter does not match the required hh:mm:ss[.mmm] format