diff --git a/.changeset/polite-wombats-smash.md b/.changeset/polite-wombats-smash.md
index 250ca215f5..98569e1799 100644
--- a/.changeset/polite-wombats-smash.md
+++ b/.changeset/polite-wombats-smash.md
@@ -1,6 +1,5 @@
 ---
-'@backstage/backend-app-api': patch
 '@backstage/errors': patch
 ---
 
-Add NotImplementedError
+Added `NotImplementedError`, which can be used when the server does not recognize the request method and is incapable of supporting it for any resource.
diff --git a/.changeset/what-is-going-on-babe.md b/.changeset/what-is-going-on-babe.md
new file mode 100644
index 0000000000..c22d69d1de
--- /dev/null
+++ b/.changeset/what-is-going-on-babe.md
@@ -0,0 +1,5 @@
+---
+'@backstage/backend-app-api': patch
+---
+
+Add support for `NotImplementedError`, properly returning 501 as status code.