cross company subcontrating in sap with same company code

Dear Sir

we have an scinario of cross company subcontrating in sap with same company code , take an example my plat is 1003 and another is 1019 with same company code, so is it possible to do subcontracting ? i will process doccoumntation like j1if01

which i raise with vendor also.

plz send me procedure

regards''

sumit