diff --git a/_format/1.0/index.md b/_format/1.0/index.md
index a950b8cd0..50252d8df 100644
--- a/_format/1.0/index.md
+++ b/_format/1.0/index.md
@@ -1719,6 +1719,11 @@ request is successful and no content is returned.
A server **MUST** return a `200 OK` status code if a deletion request is
successful and the server responds with only top-level [meta] data.
+##### 404 NOT FOUND
+
+A server **SHOULD** return a `404 Not Found` status code if a deletion request fails
+due to the resource not existing.
+
##### Other Responses
A server **MAY** respond with other HTTP status codes.
diff --git a/_format/1.1/index.md b/_format/1.1/index.md
index 59af180d1..334d35017 100644
--- a/_format/1.1/index.md
+++ b/_format/1.1/index.md
@@ -633,22 +633,22 @@ The following characters **MUST NOT** be used in member names:
#### @-Members
-Member names **MAY** also begin with an at sign (U+0040 COMMERCIAL AT, "@").
-Members named this way are called "@-Members". @-Members **MAY** appear
-anywhere in a JSON API document.
-
-However, JSON API processors **MUST** completely ignore @-Members (i.e. not
-treat them as JSON API data).
-
-Moreover, the existence of @-Members **MUST** be ignored when interpreting all
-JSON API definitions and processing instructions given outside of this
-subsection. For example, an [attribute][attributes] is defined above as any
-member of the attributes object. However, because @-Members must be ignored
-when interpreting that definition, an @-Member that occurs in an attributes
-object is not an attribute.
-
-> Note: Among other things, "@" members can be used to add JSON-LD data to a
-JSON API document. Such documents should be served with [an extra header](http://www.w3.org/TR/json-ld/#interpreting-json-as-json-ld)
+Member names **MAY** also begin with an at sign (U+0040 COMMERCIAL AT, "@").
+Members named this way are called "@-Members". @-Members **MAY** appear
+anywhere in a JSON API document.
+
+However, JSON API processors **MUST** completely ignore @-Members (i.e. not
+treat them as JSON API data).
+
+Moreover, the existence of @-Members **MUST** be ignored when interpreting all
+JSON API definitions and processing instructions given outside of this
+subsection. For example, an [attribute][attributes] is defined above as any
+member of the attributes object. However, because @-Members must be ignored
+when interpreting that definition, an @-Member that occurs in an attributes
+object is not an attribute.
+
+> Note: Among other things, "@" members can be used to add JSON-LD data to a
+JSON API document. Such documents should be served with [an extra header](http://www.w3.org/TR/json-ld/#interpreting-json-as-json-ld)
to convey to JSON-LD clients that they contain JSON-LD data.
## Fetching Data
@@ -1740,6 +1740,11 @@ request is successful and no content is returned.
A server **MUST** return a `200 OK` status code if a deletion request is
successful and the server responds with only top-level [meta] data.
+##### 404 NOT FOUND
+
+A server **SHOULD** return a `404 Not Found` status code if a deletion request fails
+due to the resource not existing.
+
##### Other Responses
A server **MAY** respond with other HTTP status codes.