| Tag | Field Name | Req'd | Comments | ||
|---|---|---|---|---|---|
| 10 | CheckSum | Y | (Always unencrypted, always last field in message)
| ||
| 89 | Signature | N | Note: Not to be included within SecureData field
| ||
| 93 | SignatureLength | N | Required when trailer contains signature. Note: Not to be included within SecureData field | ||