TECS is a standard SAP Table which is used to store Master Effectivity Object data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TECS table consists of various fields, each holding specific information or linking keys about Master Effectivity Object data available in SAP. These include TECHS (Parameter Variant/Standard Variant), ANDAT (Date record created on), ANNAM (User who created record), DATE_LO (Date - lower limit)... 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. .