ID:18500 The <assignment_type> assignment in the current design does not match the base design (assignment in current design <current_design_assignment_status>, assignment in base design <base_design_assignment_status>).

CAUSE: An important assignment in the current design does not match the base design.

ACTION: Update the assignment in the current design to match the base design, or change the base design's assignment and recompile the base design before compiling the current design.