Field
| ID (tag) | 9579 |
| Type | String |
FIX 4.2 Format: String
10-byte Expanded Activity ID associated with an Execution Report. This tag is a concatenation of a 5-digit Reference number, followed by a 5-digit Sequence number. Both reference number and sequence number will start at 00001 (i.e. 0000100001). For each new activity, the Reference and Sequence number will increment by one. The Reference number will remain the same when a modification was performed on a specific activity.
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