BP EEWB field in CRM to ECC zfield in KAN1

Hello  all ..

I have added  few custom fields to BP through EEWB  and want them to replicate to ECC .

Here are the steps I followed ...

We are on CRM 5.0 and ECC 6.0

1) Added the fields in same order as EEWB in  BSS_CENTIX (component type GB_BAPIUPD ) and BSS_CENTI ( data element/domain same as in BUT000)  in ECC

2) Maintained table TBE24, Create a product and mark it active in ECC.

    Maintained  table TBE34 for the event DE_BALE with same product  and Function module = Z_INTERFACE_DE_BALE

( copy of SAMPLE_INTERFACE_DE_BALE  ) in ECC

3) I wrote  the code in Z_INTERFACE_DE_BALE and mapped the custom fields to structures in the CT_IDOC_DATA.

I have mapped custom field/Z field in KNA1 to  the eewb field  in  Z_INTERFACE_DE_BALE   like this...

extended the Idoc  i.e added a custom segment ZE1KNA1M under E1KNA1M

But still the field is not getting replicated. ( though eewb fields are replicated to standard fields in Kna1)

Hope Iu2019m clear with my question.

Thanks in advance.