in aws-ecs-server/src/main/resources/buildServerResources/ecsSettings.js [376:382]
agent_pool_id : function () {
var agentPoolId = this._image['agent_pool_id'];
if (!agentPoolId || agentPoolId === '' || agentPoolId === undefined) {
this.addOptionError('notSelected', 'agent_pool_id');
isValid = false;
}
}.bind(this)