Error scheduling check on diffrent active node then the active web 2 node

I have 2 icinga masters running with web2 configured on both and director running on Master 1.
When i try to reschedule a check for a service on Master2 (i.e. apt service, sdc03124) from Master1 (icingaweb2 on sdc03123) i get the following error:

icinga2: Can’t send external Icinga command: 404 No objects found.

#0 /usr/share/icingaweb2/modules/monitoring/application/forms/Command/Object/CheckNowCommandForm.php(76): Icinga\Module\Monitoring\Command\Transport\CommandTransport->send(Object(Icinga\Module\Monitoring\Command\Object\ScheduleServiceCheckCommand))
#1 /usr/share/php/Icinga/Web/Form.php(1171): Icinga\Module\Monitoring\Forms\Command\Object\CheckNowCommandForm->onSuccess()
#2 /usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Controller/MonitoredObjectController.php(325): Icinga\Web\Form->handleRequest()
#3 /usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Controller/MonitoredObjectController.php(68): Icinga\Module\Monitoring\Web\Controller\MonitoredObjectController->setupQuickActionForms()
#4 /usr/share/icingaweb2/modules/monitoring/application/controllers/ServiceController.php(72): Icinga\Module\Monitoring\Web\Controller\MonitoredObjectController->showAction()
#5 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action.php(507): Icinga\Module\Monitoring\Controllers\ServiceController->showAction()
#6 /usr/share/php/Icinga/Web/Controller/Dispatcher.php(76): Zend_Controller_Action->dispatch(String)
#7 /usr/share/icingaweb2/library/vendor/Zend/Controller/Front.php(937): Icinga\Web\Controller\Dispatcher->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
#8 /usr/share/php/Icinga/Application/Web.php(300): Zend_Controller_Front->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
#9 /usr/share/php/Icinga/Application/webrouter.php(99): Icinga\Application\Web->dispatch()
#10 /usr/share/icingaweb2/public/index.php(4): require_once(String)
#11 {main}

Also, somehow my Master2 (sdc03124) is always the default active endpoint for icinga (unless is it not running.).
Additionally, while Master 2 is active only Master 2 is shown under Hosts in Icingaweb2 (on Both Master1&2)

I don’t know if this is intendet or in which way the default endpoint is chosen.

Info:
My Setup:

Master 1 (sdc03123) zones.conf

/*
 * Generated by Icinga 2 node setup commands
 * on 2021-02-19 08:38:22 +0100
 */

object Endpoint "sdc03123.my.domain.com" {
}

object Endpoint "sdc03124.my.domain.com" {
       host = "192.168.0.218"
}

object Zone "master" {
        endpoints = [ "sdc03123.my.domain.com", "sdc03124.my.domain.com" ]
}

object Zone "global-templates" {
        global = true
}

object Zone "director-global" {
        global = true
}

Master2 (sdc03124) zones.conf

/*
 * Generated by Icinga 2 node setup commands
 * on 2021-02-19 08:50:41 +0100
 */

object Endpoint "sdc03123.my.domain.com" {
}

object Endpoint "sdc03124.my.domain.com" {
}

object Zone "master" {
        endpoints = [ "sdc03123.my.domain.com", "sdc03124.my.domain.com" ]
}

/*
object Zone "sdc03124.my.domain.com" {
        endpoints = [ "sdc03124.my.domain.com" ]
        parent = "master"
}

 * from node wizard sattelite setup
 */


object Zone "global-templates" {
        global = true
}

object Zone "director-global" {
        global = true
}

Master 1 (sdc0123) api-users.conf


/**
 * The ApiUser objects are used for authentication against the API.
 */
object ApiUser "root" {
  password = "mypassword"
  // client_cn = ""

  permissions = [ "*" ]
}

object ApiUser "icingaweb2" {
  password = "mypassword"
  permissions = [ "status/query", "actions/*", "objects/modify/*", "objects/query/*" ]
}

object ApiUser "director" {
  password = "mypassword"
  permissions = [ "*" ]
}

Master2 (sdc03124) api-user.conf

/**
 * The ApiUser objects are used for authentication against the API.
 */
object ApiUser "root" {
  password = "mypassword"
  // client_cn = ""

  permissions = [ "*" ]
}

object ApiUser "icingaweb2" {
  password = "mypassword"
  permissions = [ "status/query", "actions/*", "objects/modify/*", "objects/query/*" ]
}
object ApiUser "director" {
  password = "mypassword"
  permissions =  [ "*" ]
}

if you require any additional info please let me know!

By disabeling the conf.d directory und manually adding the Services for both Icinga Servers I’ve solved the problem of beeing unable to schedule checks.