diff --git a/ci/code_checks.sh b/ci/code_checks.sh
index 2b418d6655b0b..03f6d005d55bb 100755
--- a/ci/code_checks.sh
+++ b/ci/code_checks.sh
@@ -100,7 +100,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.DataFrame.var PR01,RT03,SA01" \
         -i "pandas.DatetimeIndex.indexer_at_time PR01,RT03" \
         -i "pandas.DatetimeIndex.snap PR01,RT03" \
-        -i "pandas.DatetimeIndex.to_period RT03" \
         -i "pandas.Grouper PR02" \
         -i "pandas.Index PR07" \
         -i "pandas.Index.append PR07,RT03,SA01" \
@@ -244,7 +243,7 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Series.dt.round PR01,PR02" \
         -i "pandas.Series.dt.seconds SA01" \
         -i "pandas.Series.dt.strftime PR01,PR02" \
-        -i "pandas.Series.dt.to_period PR01,PR02,RT03" \
+        -i "pandas.Series.dt.to_period PR01,PR02" \
         -i "pandas.Series.dt.total_seconds PR01" \
         -i "pandas.Series.dt.tz_convert PR01,PR02" \
         -i "pandas.Series.dt.tz_localize PR01,PR02" \
diff --git a/pandas/core/arrays/datetimes.py b/pandas/core/arrays/datetimes.py
index b5048973755bc..8747f795bebd8 100644
--- a/pandas/core/arrays/datetimes.py
+++ b/pandas/core/arrays/datetimes.py
@@ -1207,6 +1207,7 @@ def to_period(self, freq=None) -> PeriodArray:
         Returns
         -------
         PeriodArray/PeriodIndex
+            Immutable ndarray holding ordinal values at a particular frequency.
 
         Raises
         ------