About data transform expressions in source fields.

General
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  1. @LengthOfPageList(.ToRecipients)>0&&.ToRecipients().WoID==“”&&.ToRecipients().ContactID==“”

2.@(Pega-IntegrationArchitect:pyServicesUtilities ).pyValidateEmailID(.ToRecipients().ExternalAddress)

  1. @pxAddMessageToPage(“Invalid email address”,Primary)

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@PRATHYUSHAS8626

What is your query here?

Do you want to know what each expression does or something else?

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@PrakashDeep Explain me why this expressions are used?

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@PRATHYUSHAS8626

LengthOfPageList is a function that allows you to retrieve the number of elements in a page list property. It returns the count of elements present in the specified page list.

pxAddMessageToPage is a method used to add a message to the system clipboard for display to the user