How to create SAP Variants and Layouts for any T Code having Selection Screen 

How to create SAP Variants and Layouts for any T-Code having Selection Screen
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SAP Variant: Whenever you execute any SAP T-Code, before any result, if selection screen appears, in which you need to set a criteria… that criteria can be saved for future use, is called Variant, in other words “Variants is saved set of values in selection screen”. For further detail.
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SAP Layout: As Layout means, something arranged or laid out, so in SAP Table, Databases and Reports can be arranged as per requirement and saved for your future use. For further detail.
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