The following DataNodes have no identifier: 7
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
The following genes with an identifier have been found but that do not have a mapping to Ensembl: 2
http://classic.wikipathways.org/instance/WP5324_r134468 CLA-HY with datasource UniProtKB
http://classic.wikipathways.org/instance/WP5324_r134468 PGTS2 with datasource UniProtKB
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping