Error (13264): Can't resolve multiple constant drivers for net <*> - Error (13264): Can't resolve multiple constant drivers for net <*> Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 20.4, you might see this error when compiling during synthesis stage. This occurs when an array of structs is being assigned in a for-loop wrapped by an if/else block then wrapped by a generate block. Resolution A patch is available to fix this problem for the Intel® Quartus® Prime Pro Edition Software version 20.4. Download and install the patch from the following links: Intel® Quartus® Prime 20.4 Patch 0.49 for Window (.exe) Intel® Quartus® Prime 20.4 Patch 0.49 for Linux (.exe) Readme for Intel® Quartus® Prime 20.4 Patch 0.49 (.txt) This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 22.3. Custom Fields values: ['novalue'] Troubleshooting 15011062000 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.3 20.4 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']