The strategy is selected using a Spring <alias alias='org.dspace.app.requestitem.RequestItemAuthorExtractor' name='theStrategyClass'/>. Previously this was done by moving the RequestItemAuthorExtractorid to the selected <bean> definition.
Info
title
New in DSpace 7.6
The strategy is selected by configuring it into the <bean/> for RequestItemMetadataStrategy as a constructor argument.