Add a META.json to the distribution. Your buildtool should be able to autogenerate it.

Add tests or move tests.pl to the t/ directory!

Define the license if you are using in Build.PL. If you are using MakeMaker (Makefile.PL) you should upgrade to ExtUtils::MakeMaker version 6.31.

Add =head1 LICENSE and/or the proper text of the well-known license to the main module in your code.

Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: Db::DFC, DfClient, DfException, DfId, DfList, DfLoginInfo, DfProperties, DfQuery, DfTime, DfTrace, DfUtil, DfValueContext, IDfACL, IDfActivity, IDfAliasSet, IDfAssembly, IDfAttr, IDfAttrLine, IDfCancelCheckoutNode, IDfCancelCheckoutOperation, IDfChangeDescription, IDfCheckinNode, IDfCheckinOperation, IDfCheckoutNode, IDfCheckoutOperation, IDfClient, IDfCollection, IDfContainment, IDfCopyNode, IDfCopyOperation, IDfDDInfo, IDfDeleteNode, IDfDeleteOperation, IDfDocbaseMap, IDfDocument, IDfEnumeration, IDfException, IDfExportNode, IDfExportOperation, IDfFile, IDfFolder, IDfFormat, IDfFormatRecognizer, IDfGroup, IDfId, IDfImportNode, IDfImportOperation, IDfList, IDfLoginInfo, IDfMoveNode, IDfMoveOperation, IDfOperation, IDfOperationError, IDfOperationMonitor, IDfOperationNode, IDfOperationPopulator, IDfOperationStep, IDfPackage, IDfPersistentObject, IDfProcess, IDfProperties, IDfQuery, IDfQueryFullText, IDfQueryLocation, IDfQueryMgr, IDfQueryResultEvent, IDfQueryResultItem, IDfQueryResultListener, IDfQueueItem, IDfRelation, IDfRelationType, IDfRouter, IDfSearchable, IDfSession, IDfSysObject, IDfTime, IDfType, IDfTypedObject, IDfUser, IDfVDMNumberingScheme, IDfVDMPlatformUtils, IDfValidator, IDfValue, IDfValueAssistance, IDfVersionLabels, IDfVersionPolicy, IDfVersionTreeLabels, IDfVirtualDocument, IDfVirtualDocumentNode, IDfWorkflow, IDfWorkflowBuilder, IDfWorkitem

This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.

Add SECURITY(.pod|md). See Software::Security::Policy.

Add SECURITY(.pod|md) and add a contact address. See Software::Security::Policy.

Add CONTRIBUTING(.pod|md). See https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/setting-guidelines-for-repository-contributors.