894 Client

Server Communication Error

TCP or network failure between the SCU and the KRA backend.

Likely Causes

No internet connection
VSCU 24-hour reconnection ceiling reached
KRA API server unreachable

Fix

Check connectivity to etims-api.kra.go.ke. If on VSCU, check when the JAR last connected — it stops issuing receipt numbers exactly 24 hours after the last successful connection with no warning signal.

Gotcha

The VSCU 24-hour ceiling surfaces as a TCP connection refusal or HTTP 503 — indistinguishable from a JAR crash. Track connectivity timestamps at the application layer.

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