3053779 - Phone and mobile number can't be displayed at the same time for a business partner

Both telephone and mobile phone numbers were maintained for a business partner (or vendor, customer, etc.) which can't be displayed together. Regardless of the default flag, only one of them will show up on the screen.

Alternatively, when changing the communication data in transaction BP error AM892 - Internal error - access to IT_ADR2_L is displayed. 

phone, telephone, phone number, telephone number, mobile, mobile phone, mobile phone number, business partner, bp, ADR2, bupa, Geschäftspartner, GP, AM892, AM, 892, AM-892, Internal error - access to IT_ADR2_L, Interner Fehler - Zugriff auf IT_ADR2_L, IT_ADR2_L  , KBA , BC-SRV-ADR , Address Management / Business Address Services , Problem