League's Manager has created a match in WCM, but this match doesn't appear in InPlayer under section Assets, also the InPlayer field is empty in the list of Matches in WCM Control Panel.
Log in to WCM, go to Competition Manager - select a season - competition, find a respective match, click on InPlayer icon - "Manage Match from InPlayer" form will appear.
Activate one of two option and click Update this Asset.