The EnableLegacyChecksumFallback setting is used to provide support for legacy checksums in DeficiencyPop URLs. Legacy checksums are created in versions of OnBase prior to version 14, created without using a unique string value as a checksum key, or created from a version of OnBase after 14 that has the EnableLegacyChecksumCreation option in the Application Server web.config file set to true. By default, this setting is set to false.
Set EnableLegacyChecksumFallback to true in order to allow legacy checksums to be validated. EnableChecksum must also be set to true. If both of these settings are set to true, any value in the ChecksumKey setting is disregarded.
If this option is set to false, then legacy checksums will not validate, and users will be unable to view documents whose generated URLs contain a legacy checksum.
Setting the EnableLegacyChecksumFallback setting to true should be considered a temporary method of validating legacy checksums until you can recreate and replace the DeficiencyPop URLs using the unique string value as the checksum key.
In the Web Application Management Console, this setting is available on the Healthcare Pop Integration tab as Enable Legacy Checksum Fallback.