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# NSExtensionFileProviderUploadPipelineDepth

The per-domain limit of concurrent calls that a file provider extension can make to upload data.

## Discussion

Use this value to set the limit of concurrent calls to methods like <doc://com.apple.documentation/documentation/FileProvider/NSFileProviderReplicatedExtension/createItem(basedOn:fields:contents:options:request:completionHandler:)> and <doc://com.apple.documentation/documentation/FileProvider/NSFileProviderReplicatedExtension/modifyItem(_:baseVersion:changedFields:contents:options:request:completionHandler:)>. Set the value for this key to an integer in the range `1` to `128`.

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