# EC1100

## Synopsis

ERROR EC1100: Command was not A2E_ACK, got [value]

## Description

The handshake consists of several messages, with a few `E2A_SYNC`/`A2E_ACK` pairs at specific points during the sequence. One such point is following the `E2A_SET_TIME` message. eMake sends the sequence `E2A_SET_TIME, E2A_SYNC;` and it expects the agent to respond with `A2E_ACK`. This error code indicates that the agent replied with some other command code.

## Reasons

There is no known reason this error code would appear.

## Fixes

If you see this error occur reproducibly, an eMake jn debug log and an agent “session trace all” log will be instrumental in diagnosing the problem.