In the following conversation, Kevin is tasked by his manager to improve the quality of the company's asset master data.
Start the video below to follow the dialogue between Kevin, Mike, and Maxine.
Kevin calls Maxine, to ask her about their next step, and Maxine elaborates on their need to validate the Base Unit of Measure field.
When Kevin requests clarity on a validation rule, Maxine explains that it essentially enables them to program a system response. She tells him, that they need to outline specific preconditions, and if those conditions are met, the system will output a warning or error message.
Look at the illustration, to follow Maxine’s explanation.

Precondition
First, the precondition for validation is set. In the example, all asset classes except asset class LVA 5000 should be checked.
Asset class Machinery 2000 is checked.
Validation
In the second step, the validation is entered: It is entered as it should be.
In the example: The BaseUnit field is empty.
If the precondition is met and the base unit of measure is empty, no message is displayed.
If the user fills in the BaseUnit field in an asset master record with a value such as piece, they receive a message when pressing Enter on the keyboard.
Message
The message can be a warning or an error message.
In this example, they would receive the following warning message: "Field Base Unit of Measure must not have an initial value."
To see how Kevin validates the asset master record field, Base Unit of Measure start the video below.