All edge services emit structured diagnosis messages into a central panel (Settings → Diagnosis). Each message carries a four-digit code; the first digit identifies the reporting service.

Range	Service	Codes
1xxx	MainUI	1001–1099
2xxx	UpdateService	2001–2099
3xxx	IOLinkMasterProxy	3001–3099
4xxx	USBService	4001–4099
7xxx	DataStore (external)	7000–7999

MainUI (1xxx)

Code	Meaning	Typical action
1001	Update server unreachable	Check the edge’s internet / VPN.
1003	Netplan apply failed	Re-check the IP config you entered, reboot.
1004	Config file corrupt	Call a service technician — edge falls back to defaults.
1005	Docker socket unreachable	Reboot; if it persists, service technician.
1006	Service URL unreachable	Which URL is shown in the diagnosis detail.
1007	Container unhealthy	Check that service’s diagnosis tab.
1008	Docker command failed	Service technician.
1009	Update signature invalid	Do not install — contact Brinkhaus support.

UpdateService (2xxx)

Code	Meaning	Typical action
2001	Update directory missing	Service technician.
2002	Pre-update backup failed	Check disk space, retry.
2003	docker compose up failed	Check diagnosis detail, possibly perform rollback.
2004	Post-update health check failed	Update is rolled back automatically — check logs.
2005	Rollback initiated	Informational — no action needed.
2006	Rollback succeeded	Informational — edge is back up.
2007	Rollback failed	Service technician immediately.
2008	Update signature verification failed	Do not install — contact support.

IOLinkMasterProxy (3xxx)

Code	Meaning	Typical action
3001	IO-Link master unreachable	Check the LAN cable to the IFM master, reboot the IFM device.
3002	High error rate while proxying	IFM master or network has issues — check logs.
3003	HTTP error from IO-Link master	Check the IFM configuration.

USBService (4xxx)

Code	Meaning	Typical action
4001	USB mount failed	Re-insert the stick; try a different stick.
4002	File transfer failed	Re-insert the stick.
4003	MainUI unreachable	The edge itself has a problem — see codes 1xxx.
4004	USB detected but no device	Re-insert the stick.
4005	CSV files pending transfer	Insert a USB stick.
4006	Container restarting	Informational.
4007	No USB with files to copy	Informational.
4008	Last copy succeeded	Informational.

Where can I see the codes?

In Settings → Diagnosis expand the panel per service to see individual messages with their codes and descriptions:

Via the fleet integration the same codes are also visible centrally in the Brinkhaus FleetManager — a dedicated explanation page is coming.