Not available function in the Formula Fields

D.

In Salesforce, a Formula field is a read-only field that derives its value from the calculation of values of other fields or expressions. It can be used to perform calculations, comparisons, or to display data in a specific format.

Out of the given options, the function that is not an available function in the formula fields is the Vlookup function. The Vlookup function is a lookup function used in Microsoft Excel and Google Sheets, but it is not available in Salesforce formula fields.

Here's a brief explanation of the other three functions:

A. Hyperlink: The Hyperlink function is used to create a clickable link in a formula field. It takes two arguments: the link's URL and the link's display name.

B. Substitute: The Substitute function is used to replace a specific text in a string with another text. It takes three arguments: the original string, the text to be replaced, and the text to replace it with.

C. RPad: The RPad function is used to add padding to the right side of a text string. It takes two arguments: the text string and the number of characters to pad.

In summary, the Vlookup function is not available in Salesforce Formula fields, while the HyperLink, Substitute, and RPad functions are available.