Belgian banking "structured communication"

DATE=`date +"%y%m%d%H%M"`; CHECKSUM=`printf "%02d" $((DATE%97))`; echo $DATE$CHECKSUM |sed -e 's#\([0-9]\{3\}\)\([0-9]\{4\}\)\([0-9]\{5\}\)#+++\1/\2/\3+++#'
Derived from current time down to minutes.
Sample Output 
+++190/8272/22249+++

1
By: lowry
2019-08-27 20:24:38
echo sed Belgian Banking
0
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