SAP ABAP Data Element EXTNR (Base Planning Object (External Number)) is used by

• Class (5)
• Function Module (25)
• Interface (1)
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#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_BASE_PLANNING_OBJECT_CK	PCP Valuation Object: Base Planning Object	CKBK	APPL	SAP_FIN
2	Class	CL_BASE_PLANNING_OBJECT_CK	PCP Valuation Object: Base Planning Object	CKBK	APPL	SAP_FIN
3	Class	CL_COST_ESTIMATE	PCP Standard Cost Estimate	CKBK	APPL	SAP_FIN
4	Class	CL_WRAP_BPO_CK	Valuation Interface Base Planning Object	KKEK	APPL	SAP_FIN
5	Class	CL_WRAP_BPO_CK	Valuation Interface Base Planning Object	KKEK	APPL	SAP_FIN