Let's say something like this is being returned when attempting to upgrade a package using the imcl (Installation Manager command line tool) command line tool.

CRIMA1020E ERROR: Failed to extract zip com.ibm.websphere.ND.itlm.nd_035_dist.all 8.5.5021.202202021812. 
File /opt/WebSphere/AppServer/properties/version/ibm.com_WebSphere_Application_Server_Network_Deployment-8.5.5.21.swidtag already exists.

Here are files that I've happened upon that have returned CRIMA1020E.

• /opt/WebSphere/AppServer/properties/version/ibm.com_WebSphere_Application_Server_Network_Deployment-<version>.swidtag
• /opt/WebSphere/AppServer/installableApps/metrics.ear 
• /opt/WebSphere/AppServer/properties/service/productDir/WebSphere/service/actions/modifyMaxHeapSizeJspBatchCompiler.ant

You can rename the files that already exist and then reissue the imcl command.

cd /opt/WebSphere/AppServer/properties/version/
mv ibm.com_WebSphere_Application_Server_Network_Deployment-<version>.swidtag ibm.com_WebSphere_Application_Server_Network_Deployment-<version>.swidtag.old

cd /opt/WebSphere/AppServer/installableApps/
mv metrics.ear metrics.ear.old

cd /opt/WebSphere/AppServer/properties/service/productDir/WebSphere/service/actions/
mv modifyMaxHeapSizeJspBatchCompiler.ant modifyMaxHeapSizeJspBatchCompiler.ant.old