Just write down my research for later usage, it could also be considered as an answer to this question In which table of CRM the Serial number and Equipment information stores.
We know once an equipment is downloaded from ERP into CRM, a corresponding Individual object is generated.
Several fields of Equipment header will be persisted to settype COM_TA_R3_ID in CRM. The mapping logic between the two systems could be found from program LIB_CRM_EQUI_UPLOADF22, form set_com_ta_r3_id.
I draw a table for them.
