Help Center Troubleshooting Problems with Ad Serving

What are VAST error codes?

VAST 3.0 and newer supports error reporting with a specific code to assist troubleshooting. If the video player cannot handle, process, or play the VAST tag, it will report back to our video ad server with the specific error code. The event report will show the error code under "Custom Variable" tab. Here are the codes and their meanings:

Error Description
100 XML parsing error.
101 VAST schema validation error.
102 VAST version of response not supported.
200 Trafficking error. Video player received an ad type that it was not expecting and/or cannot display.
201 Video player expecting different linearity.
202 Video player expecting different duration.
203 Video player expecting different size.
300 General Wrapper error.
301 Timeout of VAST URI provided in Wrapper element, or of VAST URI provided in a subsequent Wrapper element. Includes request errors such as invalid URI, unreachable or request timeout for URI, and security or other exceptions related to requesting a VAST URI.
302 Wrapper limit reached, as defined by the video player. Too many Wrapper responses have been received with no InLine response.
303 No ads VAST response after one or more Wrappers. Also includes number of empty VAST responses from fallback.
400 General linear error. Video player is unable to display the linear ad.
401 File not found. Unable to find Linear/MediaFile from URI.
402 Timeout of MediaFile URI.
403 Could not find MediaFile that is supported by this video player, based on the attributes of the MediaFile element.
405 Problem displaying MediaFile.
500 General NonLinearAds error.
501 Unable to display NonLinear Ad because creative dimensions do not align with creative display area (i.e., creative dimension too large).
502 Unable to fetch NonLinearAds/NonLinear resource.
503 Could not find NonLinearresource with supported type.
600 General CompanionAds error.
601 Unable to display companion because creative dimensions do not fit within Companion display area (i.e., no available space).
602 Unable to display Required Companion.
603 Unable to fetch CompanionAds/Companion resource.
604 Could not find Companion resource with supported type.
900 Undefined error.
901 General VPAID error.

Reference: IAB VAST 3.0

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