This setting is used for DocPop checksum creation when the docID is used from outside of the Web Client solution (for example, in Workflow notifications). Enter a unique secret key used for checksum creation and validation. For successful validation, the value of the key must match each component in the creation and validation process.
Configuration of this setting is required for checksum creation and validation using the Application Server.
See the following:
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The ChecksumKey value in the Application Server web.config file must match the checksum value in the Web Server web.config file, within the element that corresponds to the type of Pop integration being used. For example, for DocPop, the checksum value is within the Hyland.Web.DocPop element.
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If the checksum will be created by a module or service that does not directly communicate with the Application Server or Web Server (such as the Workflow Timer Service), then you may need to add the ChecksumKey setting to the module or service's configuration file. Ensure the added ChecksumKey value matches the DocPop checksum key values in the Web Server and Application Server web.config files.
For more information about checksum creation, please refer to the Hyland SDK.