Identifying Metadata

The documentation refers to "general, identifying information" about a metadata object. This phrase refers to the object's Id and Name attributes.
Each metadata object in a repository, such as the metadata for a particular column in a SAS table, has a unique identifier assigned to it when the object is created. Each object also has a name. For example, here is the Id and Name for a SAS table column, as returned by the GetMetadata method.
  <Column Id="A2345678.A3000001" Name="New Column"/>
Id
refers to the unique identifier assigned to a metadata object. It has the form reposid.instanceid. For example, in the previous example, the Id for the Column object is A2345678.A3000001.
The reposid is assigned to a metadata repository by the SAS Metadata Server when the repository is created. A reposid is a unique character string that identifies the metadata repository that stores the object.
The instanceid is assigned to a metadata object by the SAS Metadata Server when the object is created. An instanceid is a unique character string that distinguishes one metadata object from other metadata objects of the same metadata type.
Name
refers to the user-defined name of the metadata object. An object name is a non-null value up to 60 characters. The name cannot start or end with a whitespace character, or contain /, \, or control characters. Names can contain Unicode characters, subject to the previously noted restrictions. In the previous example, the Name value of the table column is New Column.
Note:    Because different repository systems use different ID formats, do not make assumptions about the internal format of the Id attribute.  
CAUTION:
Do not attempt to assign Id values in a client application.
Let the SAS Metadata Server assign identifiers to new objects.