GRRM_ACT_DEFAULT is a standard SAP Table which is used to store Activity Management Default data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The GRRM_ACT_DEFAULT table consists of various fields, each holding specific information or linking keys about Activity Management Default data available in SAP. These include USER_ID (User Name), ORGUNIT_ID (Object ID), CACTIVITY_ID (Object ID)... 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. .