Explain Display Variants in SAP ABAP?

Answer

• Display variants are used to set the default properties of an alv output like sort criteria, filtering criteria, totaling and subtotaling etc
• Display variants can be user specific and standard (standard variants can be used by any user )
• Kind of display variants that can be saved is controlled by the parameter i_save that is passed in function modules  reuse_alv_list_display / reuse_alv_grid_display
• You can provide an option on the selection screen to select what display variant to be used

The common function modules related to selecting / validating display variants are

1. Reuse_alv_variant_default_get
2. Reuse_alv_variant_f4
3. Reuse_alv_variant_existence