Adding a field to field group SAP query SQ02

Dear Gurus,

When I am using Adhoc query with my infoset its not giving me the provision for selecting the field P0015-AEDTM as Picture 1. I checked the infoset in SQ02 and found AEDTM is there under additional payment but without field group as Picture 2. But what ever have field group 12 as Picturet 3 is displaying in Adhoc query for selection. Whenever I tried to add AEDTM to field group 12 as Picture 4 system not allowing me to do so as Picture 5.

Please guide me on this. I need AEDTM field in my Query results.

Thanks and Regards

Athyasannanaya Oru Rogi