What is the Control Key used in work center
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QM01
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QM02
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QM03
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QM04
Control key QM04 is used in work centers for quality management integration in SAP. This control key determines how inspection operations are processed and linked to the work center, enabling automatic inspection lot creation and processing. QM01, QM02, and QM03 are other control keys with different inspection characteristics.
QM04 is the control key assigned at the work center/operation level to trigger quality management functions (like automatic inspection lot creation) for operations performed there. The other codes (QM01–QM03) are simply not the one configured for this purpose in this setup; control keys are customized per system, and QM04 is the one wired to quality processing here.