ID:169305 Too many input or bidirectional pins (<number>) are assigned in the custom region <name>. The custom region has only <number> pin location(s) supporting input operation.

CAUSE: You assigned the specified number of input or bidirectional pins in the specified custom region. However, the number of assigned input or bidirectional pins exceeds the specified limit for that custom region.

ACTION: Remove some of the input or bidirectional pins from the specified custom region.