SAP ABAP Table T399D (Control Parameters for MRP) is used by

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• Function Module (189)
• Interface (4)
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• TTYP (2)
• TYPE (1)
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#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	TTYP	WR01_SIT_TT399D	WR01_SIT_TT399D	WFIL	APPL	SAP_APPL
2	TTYP	WRF_SIT_TT399D	WRF_SIT_TT399D	WRF_DEPARTMENT_STORE	EA-RETAIL	EA-RETAIL