Unable to save custom attributes in BP_CENTRL to database

Hi Experts,

I have extended the data model with custom attributes, below are the high level steps. however when i enter the value in that field and try to approve my CR. the values are getting lost/vanished -> not saving in database active tables.

• create data element, domain
• extend active structures with customer include - kna1, lfa1, cmds*central_data + cmds*central_data_xfield, vmds*central_data + vmds*central_data_xfield.
• add attribute to data model bp_centrl , activate DM. Adjust staging.
• generate DM specific structures
• do mappings. BP_BP_CENTRL_2STA, BP_BP_CENTRL_2API
• go to genil_model_browser , add in the key structure, attribute strcture.
• add in UI and test

Is there anything i am missing here.

Thank you, Shaila.