diff --git a/R/verify-variables.R b/R/verify-variables.R
index 2ec0fc6..39c0f02 100644
--- a/R/verify-variables.R
+++ b/R/verify-variables.R
@@ -6,26 +6,34 @@
 #' occurs, rather than within this function.
 #'
 #' @param data The dataset to check.
+#' @param call The environment where the function is called, so that the error
+#'   traceback gives a more meaningful location.
 #' @inheritParams get_required_variables
 #'
-#' @return Either TRUE if the verification passes, or a character string if
-#'   there is an error.
+#' @return Either TRUE if the verification passes, or an error.
 #' @keywords internal
 #'
 #' @examples
 #' # TODO: Replace with simulated data.
-#' example_bef_data <- tibble::tibble(pnr = 1, koen = 1, foed_dato = 1)
-#' osdc:::verify_required_variables(example_bef_data, "bef")
-verify_required_variables <- function(data, register) {
+#' verify_required_variables(register_data$bef, "bef")
+#' verify_required_variables(register_data$lpr_adm, "lpr_adm")
+verify_required_variables <- function(data, register, call = rlang::caller_env()) {
   checkmate::assert_choice(register, get_register_abbrev())
+  expected_variables <- sort(get_required_variables(register))
+  actual_variables <- sort(colnames(data))
 
-  # TODO: Consider using/looking into rlang::try_fetch() to provide contextual error messages.
-  expected_variables <- get_required_variables(register)
-
-  actual_variables <- colnames(data)
-
-  checkmate::check_names(
+  if (!checkmate::test_names(
     x = actual_variables,
     must.include = expected_variables
-  )
+  )) {
+    cli::cli_abort(
+      c(
+        "This function needs specific variables from the {.val {register}} register.",
+        "i" = "Variables required: {.val {expected_variables}}",
+        "x" = "Variables found: {.val {actual_variables}}"
+      ),
+      call = call
+    )
+  }
+  return(invisible(TRUE))
 }
diff --git a/man/verify_required_variables.Rd b/man/verify_required_variables.Rd
index 6be06f6..3360acb 100644
--- a/man/verify_required_variables.Rd
+++ b/man/verify_required_variables.Rd
@@ -4,17 +4,19 @@
 \alias{verify_required_variables}
 \title{Verify that the dataset has the required variables for the algorithm.}
 \usage{
-verify_required_variables(data, register)
+verify_required_variables(data, register, call = rlang::caller_env())
 }
 \arguments{
 \item{data}{The dataset to check.}
 
 \item{register}{The abbreviation of the register name. See list of
 abbreviations in \code{\link[=get_register_abbrev]{get_register_abbrev()}}.}
+
+\item{call}{The environment where the function is called, so that the error
+traceback gives a more meaningful location.}
 }
 \value{
-Either TRUE if the verification passes, or a character string if
-there is an error.
+Either TRUE if the verification passes, or an error.
 }
 \description{
 Use this function inside another function within an \code{if} condition to provide an
@@ -24,7 +26,7 @@ occurs, rather than within this function.
 }
 \examples{
 # TODO: Replace with simulated data.
-example_bef_data <- tibble::tibble(pnr = 1, koen = 1, foed_dato = 1)
-osdc:::verify_required_variables(example_bef_data, "bef")
+verify_required_variables(register_data$bef, "bef")
+verify_required_variables(register_data$bef, "lpr_adm")
 }
 \keyword{internal}
diff --git a/tests/testthat/test-verify-variables.R b/tests/testthat/test-verify-variables.R
index 5673c85..9dbaf41 100644
--- a/tests/testthat/test-verify-variables.R
+++ b/tests/testthat/test-verify-variables.R
@@ -20,8 +20,7 @@ test_that("the required variables are present in the dataset", {
   # When some of the variables are the required variables
   expect_true(verify_required_variables(bef_complete_extra, "bef"))
 
-  # When it is a character output, it is a fail
-  expect_type(verify_required_variables(bef_incomplete, "bef"), "character")
+  expect_error(verify_required_variables(bef_incomplete, "bef"))
 })