SQL & PL/SQL :: How To Group By Data

My requirement is Data from a TableA has to be provided as an overall view

TABLEA
ID ENTITY REQ_FLG PAR_FLG EXT_FLG
CONV_1 ACCNT Y Y Y
CONV_1 PROD Y Y N
CONV_1 ADDR Y N N
CONV_2 DID Y N N
CONV_2 ORDER Y N N

Required to show the data in report as

ID Expand View_Report Populate ENTITY QRY_STATUS
CONV_1 Expand Report Populate
ACCNT Y Y Y
PROD Y Y Y
ADDR Y N N
CONV_2 Expand Report Populate
DID Y N N
ORDER Y N N

Where "Expand", "Report", "Populate" are provided as Hard coded values in query.

Sample Query.
SELECT ID
,'Expand' AS EXPAND
,'Report' AS VIEW_REPORT
, 'Populate / Reset' AS POP
, DECODE(MN_TBL.ENTITY,NULL,NULL,ENTITY) AS ENTITY
, REQ_FLG || ' ' || PAR_FLG || ' ' || EXT_FLG AS QRY_STATUS
FROM TABLEA
GROUP BY GROUPING SETS
((ID), (ENTITY, REQ_FLG , PAR_FLG , EXT_FLG ))
ORDER BY CONVERSION_ID, ENTITY

Above query works fine, where single ID is present

ID Expand View_Report Populate ENTITY QRY_STATUS
CONV_1 Expand Report Populate
ACCNT Y Y Y
PROD Y Y Y
ADDR Y N N

But when more than one ID is present the entire thing collapses