ID:15503 Design uses enable input pin "<name>" and enable input pin "<name>", but only one enable input pin can be used in <name> device family

CAUSE: You assigned the specified enable input pins (ena) in the design; however, the current device can use only one enable input design.

ACTION: Modify the design so that one input pin drives the ena port of the enhanced or fast PLL or so that only one input pin drives the ena port of a different enhanced or fast PLL.