D346T is a standard SAP Table which is used to store Table for Long GUI Objects (Texts) data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The D346T table consists of various fields, each holding specific information or linking keys about Table for Long GUI Objects (Texts) data available in SAP. These include TYPE (Type of Load), BLOCKNR (BIN4 data element for SYST), BLOBLG (BIN4 data element for SYST), UDAT (CHAR08 data element for SYST)... 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. .