Reclass rule not working when Source POV have Parent Account

Summary:

I have written a rule to pick the source pov value and past it in target pov, it's working fine when i am using child account but not working with parent account.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

FCCS DSO application with Version of 24.08.58

Code Snippet (add any code snippets that support your topic, if applicable):

SET HYBRIDBSOINCALCSCRIPT FULL;
SET IGNORECONSTANTS TRUE;
FIX (@REMOVE(@RELATIVE("Total Custom1", 0), @LIST(@RELATIVE("C1_NonAgg", 0))), @REMOVE(@RELATIVE("Total Custom2", 0), @LIST(@RELATIVE("C2_NonAgg", 0))), @RELATIVE("C3_P1000", 0), @RELATIVE("C4_SYSMEM", 0), @RELATIVE("FCCS_TotalInputAndAdjusted", 0), "DS_TB_Val")