SAP Tcode BDLS is a Tool: Conversion of Logical System Names. This program is used to convert a logical system name, which has already been defined or used in this system, to a new name. The program determines all the relevant tables and converts the corresponding entries.
1. Convert client-specific and cross-client tables
Changing the logical system name. This means changing the logical system name in all application tables of all partner systems. Creating a new system by database copy. In this case, you need to give the new system a different name to the original system.
2. Convert client-specific tables
A typical application is converting the logical system name after client copy.
On the initial screen, enter the logical system name that you want to convert in the Old Logical System Name field. Enter the new logical system name in the New Logical System Name field.
It is advisable to start the test mode first. If you select the radio button Test Run, the system first analyzes all the relevant tables and determines the number of entries to be converted. These are displayed in a list. If the radio button Check Existence of New Names in Tables is selected, the system checks whether the new logical system name already exists in the application tables. If it does, a warning is displayed in the results list. Check the table in which the new logical system name is found, and determine whether you need to convert these entries. If you do not, terminate the conversion.
The conversion is also relevant for communication partners identified by partner number and partner type. If the partner number and logical system name are the same, these table entries are also converted.
The value in the field Number of Entries per Commit is only relevant for conversion. To improve performance, this value should be as large as possible, depending on the limits of the database roll area.
In the selection screen Tables for Conversion, you can select and exclude tables for conversion, and therefore target specific data in the database. Table T000, for assigning the client to the logical system, receives special treatment and cannot be excluded if you use Convert client-specific and cross-client tables. This table is converted last. Note that if only one table is converted, the definition of the client for the logical system is also converted, if this assignment is defined in the current client. This means that the application documents in the converted tables can be found because they refer to the new logical system name, while application documents in tables that have not yet been converted are not found, because they still refer to the old logical system name. It is therefore advisable to convert all the tables in one step.
After the program has been successfully executed, a list is produced showing which tables and fields have been determined for conversion, and how many entries are relevant or have been converted. This process is recorded in the application log. To display the application logs, call the tcode SLG1 with the object CALE and the sub object LOGSYSNAME.
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