PHP SDK 0.10.16 adds the optional IncrementalResourceImportPipeline, SeekableResourceImportRowSource and ImportPipelineStep contracts. Existing synchronous pipelines remain supported. Implement validateNext() and applyNext() to commit each bounded unit and its cursor atomically; slice(offset, limit) uses zero-based data-row positions and preserves original row keys. A pending checkpoint is not a validated or apply-eligible batch. Recheck actor and organization authority on every invocation, detect duplicates across the full source and avoid repeating committed writes.

A pipeline can declare resultRowsPath for authorized paginated results. skipped means excluded without saving; not_processed means not committed after interruption. Keep both distinct from unchanged, and count only committed rows as created or updated. Upload limits are unchanged.

These contracts require the matching Core import consumer/migrations and Manager runtime before use; installing this SDK alone does not enable the workflow. See the import/export guide and the published contract source.