1601 - Concurrency Group '%s' already defined.

Description
Concurrency Groups defined in Settings() must be uniquely named.
Example
Config:
Settings { .Group1 = [ .ConcurrencyGroupName = 'link' .ConcurrencyLimit = 4 ] .Group2 = [ .ConcurrencyGroupName = 'link' .ConcurrencyLimit = 4 ] .ConcurrencyGroups = { .Group1, .Group2 } }
Output:
C:\Test\fbuild.bff(1,1): FASTBuild Error #1601 - Settings() - Concurrency Group 'link' already defined. Settings ^ \--here
Fix:
Settings { .Group1 = [ .ConcurrencyGroupName = 'link' .ConcurrencyLimit = 4 ] .Group2 = [ .ConcurrencyGroupName = 'test' .ConcurrencyLimit = 4 ] .ConcurrencyGroups = { .Group1, .Group2 } }