diff --git a/peps/pep-0847.rst b/peps/pep-0847.rst
index 2a34ced28c4..297481fe3f6 100644
--- a/peps/pep-0847.rst
+++ b/peps/pep-0847.rst
@@ -263,7 +263,8 @@ Another option is to diverge from :rfc:`9457`, and pick (or invent) another
 error format. An argument in favor of this is specificity:
 a custom error format could, for example, provide dedicated error
 codes that communicate failure modes that are common/shared
-across many index implementations and hosts.
+across many index implementations and hosts. Similarly, a custom error
+format could represent multiple errors from an index at once.
 
 We consider this option unsuitable for two reasons:
 
@@ -272,8 +273,10 @@ We consider this option unsuitable for two reasons:
    need custom representations for various authorization and authentication error
    states.
 #. :rfc:`9457` is *already* extensible, and a future PEP *could* added shared error
-   codes as a well-known extension in the future. In other words, any foreseeable
-   benefit from a custom format is already subsumable within the Problem Details format.
+   codes as a well-known extension in the future. Similarly, :rfc:`9457`'s design
+   enables multiple interior errors as an extension, per :rfc:`9457#section-3`.
+   In other words, the benefits of a custom format are already provided by the
+   Problem Details format.
 
 .. _problem-details-appendix-1: