Possible error reasons for a programmatic error.
|Audience extension is not supported by programmatic line items.
|Auto extension days is not supported by programmatic line items.
|Video is currently not supported.
|Roadblocking is not supported by programmatic line items.
|Programmatic line items do not support CreativeRotationType.SEQUENTIAL.
|Programmatic line items only support LineItemType.STANDARD and LineItemType.SPONSORSHIP if the relevant feature is on.
|Programmatic line items only support CostType.CPM.
|Programmatic line items only support a creative size that is supported by AdX. The list of supported sizes is maintained based on the list published in the help docs: https://support.google.com/adxseller/answer/1100453
|Zero cost per unit is not supported by programmatic line items.
|Some fields cannot be updated on approved line items.
|Creating a new line item in an approved order is not allowed.
|Cannot change backfill web property for a programmatic line item whose order has been approved.
|Cost per unit is too low. It has to be at least 0.005 USD.
|The value returned if the actual value is not exposed by the requested API version.