Difference between l_status and rLog in fast formula

Summary:

Hi Experts,

I want to understand the difference and functionality between mentioned below scenarios:

Case1:

IF l_Display_flag = 'Y' THEN
rLog = add_rlog (ffs_id, rule_id, 'case 1 : ' || (l_measure_day))

Case2:

l_status = add_rlog (ffs_id , rule_id ,' case 2'|| (l_measure_day))

Thanks.

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