ID:184036 Cannot place the following <number> DSP cells -- a legal placement which satisfies all the DSP requirements could not be found

CAUSE: You created assignments, or assignments were automatically created by the Fitter; however, these assignments constrained the placement of entities so that the Fitter cannot place the DSP cells to meet design requirements, or the design requires more DSP than the device contains. As a result, the DSP cells listed below were unable to be placed.

ACTION: Select a larger device with enough DSP blocks for the design, modify the design to use fewer DSP blocks or remove constraints which are restricting DSP block placement.