Hi Arun
2.
The error EM 105 is triggered when the service function module - in your case ISU_M_PARTNER_CREATE_DARK - returns without an error (SY-SUBRC = 0), but doesn't return the object key - here PARTNER - to the migration code. This ensures the table TEMKSV has only valid relationships between the logacy key (OLDKEY) and the new SAP key, required to create correct relations to dependent objects, like ACCOUNT.
In such a case the fastest way to determine the problem is by debugging the load. Transaction EMIGIMP menu item "Utilities: Import (debug mode)". Ensure on the EMGIMP screen the radio button is on "Dialog work procees".
One possible culprit I can think of is a missing number range interval. Go to transaction SNRO and check for Object "BU_PARTNER" the number ranges (F7). You might need support from a functionl consultant for this.
3.
The button "Import data object" is deactivated in two cases:
- Display mode (not the case here)
- The load function module is not in place (that's probably the case)
To get the load function module go into the migration object customising (trasnaction EMIGOBJ) for your company/object in change mode. Go to the tab "Parameters" and set the checkbox "Import function mod.". Underneath there should be a function module name, with a name like ZISU_M_IMPORT_???_PARTNER
Yep
Jürgen