Hello,

My application consumes Alfresco CMIS services and I noticed that many Alfresco 
primary and secondary types have a lot of overlapping  properties. For example 
"cmis:objectId" property appears in "cmis:document" primary and 
"P:rn:renditioned" secondary type definitions. The former secondary type can be 
applied to objects of "cmis:document" type. When applied, Alfresco returns two 
identical "<cmis:propertyId...>" entries in AtomPub response for 
"cmis:objectId" property. Apache Chemistry Workbench still works and shows only 
one occurrence of such properties.

So my questions are:

-          Is Alfresco behavior "compliant" with CMIS 1.1 in sense of having 
the "same" property defined in primary/secondary types?

-          If YES, then what assumptions are correct:

o   A "duplicated" property definition should be identical across all the type 
definitions

o   A "duplicated" property definitions should at least have a compatible 
"value" type

o   A "single" property value is "shared" across primary and secondary types in 
object "instance" (the property may appear multiple times in request/response 
but only one occurrence is respected)

-          If NO, then what assumptions are correct:

o   As a workaround: only first or last value should be respected for object 
containing "duplicated" properties

o   A "duplicated" property should be treated according to its definition in 
"primary" type

Thank you in advance,

Vyacheslav Pascarel

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