One
of a new BW features that were introduced in BW4/HANA version is
Enhanced Master Data Update. It can be enabled for a characteristics (attributes
and/or texts) type of Info Objects. Only the characteristics that do have
master data is supported. This feature brings a possibility of parallel loading
of data to the IO. There are new tables created for the IO in case the feature
is enabled. The tables are similar to inbound and active tables like aDSO object
has. Like in the aDSO
case also here the data is loaded first to inbound table. Upon the data
activation the attribute and/or text tables of the IO are updated.
Advantage
of this feature is while a huge portions of MD is being loaded and/or from
multiple sources. It means that the data can be loaded in parallel. Delta
mechanism is also supported.
The
feature can be enabled in BW
Modeling Tools of SAP
Hana Studio on IO maintenance screen on general tab.
Technically
the flag is stored in table RSDCHABAS
column ENHANCED_MD_UPDATE. Its
values referring to domain RSDMDUPDATEENH that has following 2 values:
0 Does
not use enhanced master data update
1 Uses
enhanced master data update
Once
the enhanced MD updated is enabled for the characteristics the settings related
to that can be maintained in t-code RSDMD_SETTINGS.
The t-code refers to class
CL_RSDMD_SETTINGS_CTRL and method MAINTAIN_SETTINGS.
In
case of issues with the IO activation that error message complains about the Enhanced
Master Data Update cannot be used for Char. X due to ... (e.g. message no
R7B420, R7B428 etc.) there is an ABAP program RSD_CHA_ADAPT_DEFAULT_ENHMDUPD
that fixes those.
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