All messages (administrative or application) are terminated by the Standard Trailer.
The trailer marks the end of a FIX message and includes the three-digit character representation of the Checksum value (Tag 10). It ensures the integrity of the message contents.
| Tag | Field Name | Req'd | Comments |
|---|---|---|---|
| 10 | CheckSum | Y | Checksum for current message. Always unencrypted and the last field of the message. |