TS-0001: Description of stateTag in <contentInstance>
In TS-0001, V4.12.0 (and perhaps in R2 and R3 as well), Table 9.6.6-2: Attribute of resource, the description of the stateTag attribute reads as follows:
[...] The stateTag attribute of the parent resource should be incremented first and copied into this stateTag attribute when a new instance is added to the parent resource.
I think the should shall be a shall since this is a mandatory behaviour, e.g. specified in TS-0004, 7.4.7.2.1, receiver step 3).
Proposal: change the text to (emphasised):
[...] The stateTag attribute of the parent resource shall be incremented first and copied into this stateTag attribute when a new instance is added to the parent resource.