Add site characteristic (AUSP-ATWRT) field in CN43N selection (PSJ LDB)

Hi,

I need to add site characteristic field (AUSP-ATWRT) in CN43N dynamic selection or selection screen. Projects should be selected based on this characteristic field value in the selection.

Is there are way to add this field to the selection and make the changes in the code, so that the logic fetches projects based on site characteristic value?

I have gone through few links, but they have added fields only to PRPS or PROJ structures and used them in the LDB. But I need to add a different table field to the selection and make the code changes as well.

Thanks in advance.

Regards,

Surya.