| Tag | Field Name | Data Type | Union Datatype | Description | Added | Depr. | Enums from tag |
|---|---|---|---|---|---|---|---|
| 621 | EncodedLegSecurityDescLen | Length |
Multileg instrument's individual security’s EncodedSecurityDescLen. See EncodedSecurityDescLen (350) field for description | Added FIX.4.3 |
|