INSTLOG is a standard SAP Table which is used to store SAP Installation data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The INSTLOG table consists of various fields, each holding specific information or linking keys about SAP Installation data available in SAP. These include LOGTIME (CHAR06 data element for SYST), LOGDATE (CHAR08 data element for SYST), COUNTER (Number range status), INSTRESULT (SAP Installation: Result Value)... 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. .