I've searched around however i've there does not appear to be API or CLI for OCUM annotations, it appears to be UI only function, however if you connect to the "ocum" SQL database you can view the annotation information. In theory it would be possible to execute a SQL statement from WFA to OCUM to insert the annotation. For example...
INSERT INTO ocum.annotationmanualresourcemapping (annotationTypeId, annotationValueId, resourceId, resourceType)
VALUES ((SELECT type_id FROM ocum.annotation WHERE name = 'high'), (SELECT id FROM ocum.annotation WHERE name = 'high'), (SELECT id FROM ocum.volumelivelistdtoview WHERE volumelivelistdtoview.name = 'cifs_data_003' AND volumelivelistdtoview.vserverName = 'vserver1'), 'volume');
You would probably also have to update the following tables:
You would need to connect to the OCUM database as a user who has access to insert into the tables (IE root).
Please note that I haven't fully tested this and i'm not sure it will work, just an idea for you to explore.
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