Type used by the ListingDurations container that is returned for each listing type supported for the eBay site. ListingDurations container shows the supported listing duration times for each listing type.
Type that uses ListingDurationDefinitionType:
Call that uses ListingDurationDefinitionType:
GTC means Good 'Til Canceled. The complete list of enumeration values that may be returned in this field is shown in ListingDurationCodeType.