Validate Tel Number in BP creation before save

Question

Hello Team,
I have requirement of validating Tel Number as per customer's requirement, for that I am not able  to capture value of tel no entered  on Screen. Similar validation for street field is already created by creating Z fun module which is assigned to event DHCHK via BUS7 tcode. In that  fm BUA_BUPA_MEMORY_ADDRESS_GET  is used to get address values. In that street and other details are coming but tel no is coming as blank.
Can anyone tell me what to do so that i can capture Tel No details.
Or else can i use badi for that ?
Regards,
Yogesh

Answer 1

Are you saying that the TABLES named in the FM are not populated for ADR2, 3, 4, etc.?   Look at the content of tables T_ADR2, 3, 4, etc., after your FM call.  The FM should grab all the requested BUPA details from memory.  Are these tables named in your tables statement when the FM is called? 
I would expect those to be populated after the FM call, and personally, I would either modify that existing DCHCK module to grab these tables and process content also, or add one more DCHCK module with the same FM call and add the logic and error messaging to validate as per the user requirements.   Since you already have a custom FM in the existing DCHCK FM, makes the most sense to do there, IMHO.
This is, of course, difficult since there are different formats for different countries and even within a country like the USA, I've found that different clients have different expectations as to how the phone, telex, fax, etc., numbers will be stored.