1. A computer-implemented method for processing user requests for updating data in a customer relationship management (“CRM”) system, the method comprising: displaying a first user interface for receiving user requests for updating data in the CRM system, wherein the first user interface comprises a first data input area and a second data input area corresponding to a first data field and a second data field in the CRM system respectively, and wherein the CRM system stores customer account information comprising master data and non-master data, and wherein the master data is managed by a master data management (“MDM”) system; displaying a first icon for indicating that the first data field is a data change request (“DCR”)-controlled field when a data change to the CRM system involves the master data managed by the MDM system; receiving a first user request for a first data change in the first data field; generating a first data change request, wherein the first data change request comprises a first DCR line for the first data change; and sending the first data change request to the MDM system to validate the first data change.