Before the change:

ARTIFACTORY: How to resolve the error "Invalid content was found starting with element"

AuthorFullName__c
Pavan Gonugunta
articleNumber
000005230
ft:sourceType
Salesforce
FirstPublishedDate
2022-03-28T12:12:34Z
lastModifiedDate
2022-03-28
VersionNumber
4
<backup>
<key>backup-weekly</key>
<enabled>false</enabled>
<retentionPeriodHours>168</retentionPeriodHours>
<createArchive>false</createArchive>
<excludedRepositories/>
<sendMailOnError>true</sendMailOnError>
<excludeNewRepositories>false</excludeNewRepositories>
<precalculate>false</precalculate>
</backup>


Further, adding the parameter as shown below, renaming the
artifactory.config.latest.xml
to
artifactory.config.import.xml
and restarted Artifactory application to reflect the changes.