RAM Memory segments issues - nRF52832

I am trying to develop a Mesh application using Nordic Thingy. I was trying to allocate memory space for SD132.

As mentioned in the SD release notes, I had updated the following.

FLASH_START=0x26001
SRAM_START=0x1629

 But, I am getting the following Linker errors. 

                      .data_run is too large to fit in RAM memory segment

                      .heap is too large to fit in RAM memory segment

 Please support.