I have the following constraint in my UCF file:
TIMESPEC tsa = PERIOD "CLK2" TSclk*2;
When running Translate, the following error occurs:
"ERROR:TSDatabase:36 - Specification "tsa" is defined in terms of a specification with TSid "TSclk", which does not exist."
TSclk must be defined in the UCF file when it is referred to in the constraint line. This TS identifier must have a unique name.