WCCMS is a standard SAP Table which is used to store WCM: Operational Step data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The WCCMS table consists of various fields, each holding specific information or linking keys about WCM: Operational Step data available in SAP. These include IWERK (Maintenance Planning Plant), OPTYP (Aim of Switching), STEP (Operational Step), SEQ (Sequence of Operational Steps)... 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. .