Select data from sap tables VZKN
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VZKNA1 - Collector for batch input KNA1 from RF-VV
VZKNB1 - Collector for batch input KNB1 from RF-VV
VZKNB5 - Collector for batch input KNB5 from RF-VV
VZKNBK - Collector for batch input KNBK from RF-VV
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