diff --git a/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-computed.html.ini b/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-computed.html.ini
new file mode 100644
index 000000000000..20ec2466a69d
--- /dev/null
+++ b/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-computed.html.ini
@@ -0,0 +1,27 @@
+[position-try-options-computed.html]
+  [Property position-try-options value 'none']
+    expected: FAIL
+
+  [Property position-try-options value 'flip-block']
+    expected: FAIL
+
+  [Property position-try-options value 'flip-inline']
+    expected: FAIL
+
+  [Property position-try-options value 'flip-start']
+    expected: FAIL
+
+  [Property position-try-options value 'flip-block, flip-inline']
+    expected: FAIL
+
+  [Property position-try-options value '--foo, --bar']
+    expected: FAIL
+
+  [Property position-try-options value 'flip-start flip-inline flip-block']
+    expected: FAIL
+
+  [Property position-try-options has initial value none]
+    expected: FAIL
+
+  [Property position-try-options does not inherit]
+    expected: FAIL
diff --git a/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-parsing.html.ini b/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-parsing.html.ini
new file mode 100644
index 000000000000..b83261511b86
--- /dev/null
+++ b/testing/web-platform/meta/css/css-anchor-position/parsing/position-try-options-parsing.html.ini
@@ -0,0 +1,36 @@
+[position-try-options-parsing.html]
+  [e.style['position-try-options'\] = "initial" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "inherit" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "unset" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "revert" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "none" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "flip-block" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "flip-start, flip-block" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "flip-start flip-inline, flip-block" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "flip-start, flip-start" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "flip-block, --foo" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "--bar, flip-block flip-start" should set the property value]
+    expected: FAIL
+
+  [e.style['position-try-options'\] = "--foo, --bar, --baz" should set the property value]
+    expected: FAIL