ABAP
| Table | Table - name | S/4HANA -Table and general Notes |
| AQGQCAT | SAP Query: Query Catalog | Relationship between user group, query name and InfoSet. |
| D010TAB | Table for Use Report<->Tables | |
| D020S | System table D020S (screen sources) | |
| D020T | Screen Short Description | |
| DD01L | Domains | |
| DD02L | SAP Tables | Overview of all SAP tables in the current system. |
| DD02T | SAP DD: SAP Table Texts | All SAP tables in the current system with their names (if translated). |
| DD02V | Generated Table for View | |
| DD03L | Table Fields | |
| DD03T | DD: Texts for fields (language dependent) | |
| DD04L | Data elements | |
| DD04T | R/3 DD: Data element texts | |
| DD07L | R/3 DD: values for the domains | |
| DD09L | DD: Technical settings of tables | |
| DD12L | R/3 S_SECINDEX: secondary indexes, header; | |
| DM42S | DM Relationship | |
| ENLFDIR | Additional Attributes for Function Modules | |
| FILEPATH | Logical File Path Definition | |
| PATH | Definition of Physical File Paths for Each Syntax | |
| SEOCLASS | Class/Interface | |
| SYST | ABAP System Fields | |
| T100 | Messages | Edit with transaction SE91. |
| T100C | Message Control by User | Edit with transaction OBA5. |
| TADIR | Directory of Repository Objects | Linked to table E071 via the fields PGMID, OBJECT and OBJ_NAME. |
| TAPLT | Program Application Long Texts | |
| TDEVC | Packages | |
| TDEVCT | Texts for Packages | |
| TFDIR | Function Module | |
| TFTIT | Function Module Short Text | |
| TMDIR | Table for administering methods in a class | |
| TRDIR | Generated Table for View | |
| TSE05 | ABAP Editor Template | |
| TSTC | SAP Transaction Codes | All transactions in the current system with the associated programs Edit with transaction SE93. |
| TSTCP | Parameters for Transactions | |
| TSTCT | Transaction Code Texts | |
| VBDATA | Update data | |
| VBMOD | Update function modules |
Variants-Names starts with a slash "/" to be visible to all users
| Table | Table - name | S/4HANA -Table and general Notes |
| TVARVC | Table of Variant Variables (Client-Specific) | Edit with transaction STVARV. |
| VARID | Variant directory | Use function module RS_VARIANT_CONTENTS to determine the variant values. |
| VARIT | Variant Texts |
CDS-Views
| Table | Table - name | S/4HANA -Table and general Notes |
| RSODPABAPCDSVIEW | CDS: Name of SQL View and Struct. Object | Die Verbindung zwischen DDLNAME und SQLVIEWNAME. |

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