Quartus

Can't perform <name> register packing because of user assignments for nodes in some register-node combinations


CAUSE: You assigned the nodes listed in the Messages window to custom regions and/or LogicLock regions, but the Fitter tried to optimize the I/O timing by packing the same nodes into the registers listed in the submessage(s) that appear(s) in the Messages window below this message. The Fitter cannot pack the nodes together because the register-node combinations conflict with the LogicLock and/or custom region assignments.
ACTION: Refer to the submessage(s) in the Messages window to determine which nodes and registers have conflicts between the LogicLock and/or custom region assignments and the register packing. Remove the custom region and/or LogicLock region assignments from the nodes specified in the Messages window.

See also:

Assigning an Entity or Node to a Location
Changing Assignments
Deleting Assignments in the Assignment Organizer
Overview: Making Assignments
Overview: Working with Assignments in the Floorplan Editor

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