1) Table 56 – SubscribedDataSetDataType definition
Missing HasSubtype Reference to StandaloneSubscribedDataSetDataType.

2) 6.2.10.5 StandaloneSubscribedDataSetDataType
The introduction text before table 67 is missing a common phrase "It is a subtype of ..."

3) Table 49 – DataSetReaderDataType structure
In the description of the subscribedDataSet field, wouldn't it make sense to mention that StandaloneSubscribedDataSetDataType subtype of SubscribedDataSetDataType is not a valid type for this field?
There is a similar description in Table 67 – StandaloneSubscribedDataSetDataType structure:
"The StandaloneSubscribedDataSetDataType subtype shall not be used in this structure field."