What

The cron job "Bulk Change Keywords On Content" can be used to replace keywords on content types defined in the job configuration.
If the job throws a validation error like below it means the logical name is wrong:

Validation errors: keywordGroups[7].keywords[0]: ValidationResult [code=validation.text.keywordContainerStructure.structuredKeywordsNotPermitted, args={}, nestedProperty=null, value=KeywordContainer(id=<null>)], propertyPath: keywordGroups[7].keywords[0]

How

Go to the job configuration and check if the logical name is matched to the targeted keyword group.
The logical name must match a keyword configuration for the selected content type. See KB-203 for how to find the logical name.

More information

KB-203 Finding logical name to XML keywords
KB-717 Bulk Change Keywords on Content
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