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ATP: New Features in Availability Checking ( RELN40A_SD-BF-AC )
ROGBILLS - Synchronize billing plans Addresses (Business Address Services)This documentation is copyright by SAP AG.
Short text
ATP: New Features in Availability Checking
Description
In Release 4.0A upwards, all availability checking is carried out on a dedicated machine, known as the ATP Server. Many kinds of checks are possible, including:
- Checking based on ATP logic
- Checking against planned independent requirements
- Checking against product allocations
The ATP Server has a Shared Buffer where the requirements quantities in the database tables RESB (reservations and dependent requirements) and VBBE (sales requirements) are aggregated by date. The Shared Buffer acts as a global memory for all transactions that use availability checking. When checking availability, the system reads the data from these two tables - that is, from the Shared Buffer - rather than from the database. This method has major performance advantages. A delta handling mechanism ensures that the Shared Buffer and the database are consistent with each other.
Another new feature is the ability to check requirements specific to particular customers and projects at storage location and/or batch level. This check functions in the same way as the check for non-specific requirements, which was already available in Release 3.1.
Damage caused to data by errors
Software/hardware requirements
Installation information
Effects on System Administration
You set the system parameters of the ATP Server at operating system level in the ATP Server profile. These parameters are:
- RFC address of the ATP Server (parameter: rdisp/atp_server)
- Size of the Shared Buffer (parameter: rsdb/obj/buffersize)
- Maximum number of saved objects (parameter: rsdb/obj/max_objects)
- Maximum size of the saved object (parameter: rsdb/obj/large_object_size)
For more information on these parameters, see transactions RZ11 and ST02.
Effects on Customizing
Effect on batch input
Changes to the Interface
Changes in procedure
Procedure for removing dataset errors
Transaction ACBD offers further monitoring and administrative functions for the Shared Buffer of the ATP Server: e.g.
- Complete or partial deletion of the Shared Buffer
- Comparison of the Shared Buffer with the database
This transaction also allows you to preload the data from the database into the Shared Buffer. Otherwise, the data is loaded the first time availability is checked - which could take some time.
Dependent functions
Planning
Further notes
CL_GUI_FRONTEND_SERVICES - Frontend Services TXBHW - Original Tax Base Amount in Local Currency
This documentation is copyright by SAP AG.
Length: 3124 Date: 20240427 Time: 071126 sap01-206 ( 52 ms )