Hi,
Check few things:
1.Can you please change the layout(select a different layout) and check the report again.
2. Go to S_ALR_87013558 report and check the commitment value for this WBS (navigate it through GoTo->Line Items),check if it commitment is added of this PR in this S_ALR.. report.
Please check and confirm.
Just to ask, what is the cost element type for the G/L used in this PR line item?
Regards
Saurabh