COMM_WB_USER is a standard SAP Table which is used to store User Settings: Product Workbench data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The COMM_WB_USER table consists of various fields, each holding specific information or linking keys about User Settings: Product Workbench data available in SAP. These include CLIENT (Client), UNAME (User Name), APPLICATION (Locator Application), LAST_OBJECT (GUID of an Object)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .