CAUSE: You compiled a project with multiple partitions set to preserve placement. However, nodes from multiple partitions require the same resource blocks on the device. The following situations can lead to this error:
- Multiple partitions are using imported logic from one or more Quartus Prime Exported Partition Files (.qxp) containing post-fit results. More than one imported node require the same resource blocks on the device.
- You changed the Netlist Type property of a previously placed-and-routed partition to Empty. You then recompiled the design, thereby allowing resource blocks previously occupied by the empty partition to be used for placing other logic. In a subsequent compilation, you changed the Netlist Type setting from Empty to a setting that implies placement reuse (for example, Post-Fit). Multiple partitions could now be using the same resource blocks.
- A post-fit node imported from a lower-level project uses the same resource block as another post-fit node in the current project.