ISSUE Combining BLE DFU and DFU Serial

Question

Hi, I am working on a project where I need to add ble dfu as well as serial dfu issue I am getting on adding serial dfu to ble example I am getting error variables undeclared whereas on navigating it reads the variable file nrf_error.h

Ahtasham Baig · Answer

I am actually trying to merge ble dfu with Serial DFU issue with after adding all files it gives an error for memory so I increase memory to 0x7000 and start address same as 0xF8000 I am not sure how to manage data memory address as according to this 
 https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v17.0.0%2Flib_bootloader.html&cp=7_1_3_5_0_7&anchor=lib_bootloader_memory 
 
 the project bootloader already allotted 24kb memory 
 Start address 0xF8000 
 Size: 0x6000 - 24 Kb