There's a gap between the DM and the current policy model(No grouping inside TOSCA DM). In R2, we have multiple values under 'hpa-feature-attributes' grouped by one 'hpa-feature'. However, there's actually no such grouping inside TOSCA DM. So in R3, this grouping will be spilt. Which means each 'hpa-feature-attributes' will only contain one KV pair inside and there will be many constraints with the same 'hpa-feature' name.
Nevertheless, the format used in AAI still left unchanged with that grouping idea. So when comparing for mandatory requirements, there will more hpa-features added inside req_filter_list(data from Policy), but less number in flavor_filter_list(data from AAI). And thus causing a mismatch in OOF.
Two solutions for this:
Since AAI is not changed now, just remove the duplicate values in req_filter_list in this release. As the data in AAI is the universal set of the kind of 'hpa-feature'.
(ii) When first filtering mandatory requirement, not only compare 'hpa-feature', 'hpa-version' and 'architecture', but also compare each 'hpa-attribute-key' under 'hpa-feature-attributes'.
Now I'm fixing with solution .

Old Policy Model used in Beijing:

{
 "flavorLabel": "flavor_label_vm_01",
 "flavorProperties":[
   { "hpa-feature" : "basicCapabilities",
     "mandatory" : "False",
     "architecture": "generic",
     "hpa-version": "v1",
     "hpa-feature-attributes": [
         {"hpa-attribute-key": "virtualMemSize", "hpa-attribute-value":"6", "operator": "=", "unit": "GB"},
         {"hpa-attribute-key": "numVirtualCpu", "hpa-attribute-value": "6", "operator": "=", "unit": ""}
        ]
    }
  ]
}

New policy looks like this:

{
 "flavorLabel": "flavor_label_vm_01",
 "flavorProperties":[
   { "hpa-feature" : "basicCapabilities",
     "mandatory" : "False",
     "architecture": "generic",
     "hpa-version": "v1",
     "hpa-feature-attributes": [
         {"hpa-attribute-key": "virtualMemSize", "hpa-attribute-value":"6", "operator": "=", "unit": "GB"}
        ]
   },
   { "hpa-feature" : "basicCapabilities",
     "mandatory" : "True",
     "architecture": "generic",
     "hpa-version": "v1",
     "hpa-feature-attributes": [
        {"hpa-attribute-key": "numVirtualCpu", "hpa-attribute-value": "6", "operator": "=", "unit": ""}
      ]
   }
 ]
}