diff --git a/integration/vault-plugin-secrets-ksm/ksm/path.go b/integration/vault-plugin-secrets-ksm/ksm/path.go
index ebf60e07..2319326f 100644
--- a/integration/vault-plugin-secrets-ksm/ksm/path.go
+++ b/integration/vault-plugin-secrets-ksm/ksm/path.go
@@ -16,6 +16,18 @@ var (
 	errUnknownFields = errors.New("unknown fields")
 )
 
+// withExistenceCheckValidator wraps an ExistenceFunc and
+// validates the user-supplied fields match the schema.
+func withExistenceCheckValidator(f framework.ExistenceFunc) framework.ExistenceFunc {
+	return func(ctx context.Context, req *logical.Request, d *framework.FieldData) (bool, error) {
+		if err := validateFields(req, d); err != nil {
+			return false, logical.CodedError(400, err.Error())
+		}
+
+		return f(ctx, req, d)
+	}
+}
+
 // withFieldValidator wraps an OperationFunc and
 // validates the user-supplied fields match the schema.
 func withFieldValidator(f framework.OperationFunc) framework.OperationFunc {
diff --git a/integration/vault-plugin-secrets-ksm/ksm/path_config.go b/integration/vault-plugin-secrets-ksm/ksm/path_config.go
index b4611a90..7df1f19e 100644
--- a/integration/vault-plugin-secrets-ksm/ksm/path_config.go
+++ b/integration/vault-plugin-secrets-ksm/ksm/path_config.go
@@ -60,6 +60,7 @@ func (b *backend) pathConfig() *framework.Path {
 				Callback: withFieldValidator(b.pathConfigDelete),
 			},
 		},
+		ExistenceCheck:  withExistenceCheckValidator(b.pathConfigExistenceCheck),
 		HelpSynopsis:    pathConfigHelpSyn,
 		HelpDescription: pathConfigHelpDesc,
 	}
@@ -123,3 +124,12 @@ func (b *backend) pathConfigDelete(ctx context.Context, req *logical.Request, _
 
 	return nil, nil
 }
+
+func (b *backend) pathConfigExistenceCheck(ctx context.Context, req *logical.Request, _ *framework.FieldData) (bool, error) {
+	out, err := req.Storage.Get(ctx, req.Path)
+	if err != nil {
+		return false, fmt.Errorf("existence check failed: %w", err)
+	}
+
+	return out != nil, nil
+}