MapSettings > WorkSpace
When a map runs, the software creates or reuses a workspace that it uses during the mapping process to find data that it needs to transform.
The Unique value of the WorkFilePrefix setting enables you to select globally-unique work file names for a map. If you want multiple instances of the same map to run at the same time, use this option. If you do not use the unique work files option, multiple instances of the same map will run sequentially.
If you do not use unique work files, the general retry setting is used () when one map instance interferes with another.
Note: Selecting the Memory option
for the AuditLocation setting also allows multiple instances
of the same map executing simultaneously.
Unique filename format for work files:
Mer_mapname_processkey_mapcounter_hostname[I|O].cardnumber