Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA4M1AB/SRAM/ECC1STS#0x0
ECC1ERR=0
ECC 1-Bit Error Status Register
ECC 1-Bit Error Status
0 (0): No 1-bit ECC error occurred
1 (1): 1-bit ECC error occurred
These bits are read as 0000000. The write value should be 0000000.
https://github.com/cmsis-svd/cmsis-svd-data