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PLA_E_NO_DUPLICATES
Many PLA lists are sets even when represented as ordered arrays
PLA_E_NO_DUPLICATES indicates that a list-valued property contains the same logical item more than once. The affected list can come from imported XML, merged templates, provider configuration, counter paths, APIs, or other collector-specific collections.
Compare normalized values rather than raw text: path aliases, case differences, whitespace, and repeated XML nodes can describe the same item. Remove duplicates at the configuration source so subsequent updates remain idempotent. Changing item order does not help because uniqueness is evaluated across the whole collection.
Duplicate analysis checklist
- Final serialized array or XML element list.
- Normalization rules for names and paths.
- Template layers contributing each entry.
- Deployment retries that append instead of replace.
References
- IDataCollectorSet object model
- IDataCollectorCollection and collector creation
- IDataCollectorSet::Commit persistence and validation
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