2.2.4.3.20 propList Element

The propList elements SHOULD NOT<24> contain propValue elements for meta-properties. All instances in which meta-properties, as specified in section 2.2.4.1.5, can be encountered in a document are mentioned explicitly in the syntax ABNF specified in section 2.2.4.2.

Syntactic elements that contain a propList element can express restrictions on a set of properties and/or the position of properties within a list by using property list restriction table syntax, as specified in section 2.2.

Properties that contain an error (have the PtypErrorCode type, as specified in [MS-OXCDATA] section 2.11.1) instead of an actual value MUST be omitted from the propList element.