Backup Error BR0428w

Dear Team,

During my Production server Online Full backup. It finish with warning . I am showing Warning Messege.

BR0428W File /oracle/PRD/sapreorg/sr3.data11.Z will be overwritten

BR0428W File /oracle/PRD/sapreorg/sr3700.data4.Z will be overwritten

Plesae Help

What To do

Thanks

manu