What does the expression error "missing parameters" imply when using Appian functions?

The expression error "missing parameters" indicates that required values were not provided when calling a function in Appian. Many functions in Appian are designed to accept a specific set of arguments, and if any of these required arguments are omitted, the system cannot execute the function as intended. This error serves as a prompt to developers to review the function call and ensure that all necessary parameters are included. By addressing the missing parameters, users can correct their function invocation and thus allow for successful execution of the code.

In contrast, issues related to incorrectly declared variables, function call errors, or mismatched data types point to other specific problems that would generate different error messages or behaviors. These are not related to the absence of required values in a function call, which is the specific concern highlighted by the "missing parameters" error.