Prohibit editing of the customer master records for non-consumer account types in the IC WebClient

Hi experts,

I have a requirement that customer want to "Prohibit editing of the customer master records for non-consumer account types in the IC WebClient".

current scenario:

Customer Service Agents currently have the ability to edit the master record details of customers in the IC WebClient as needed. 

The normal policy is that Agents will only modify master data for consumer accounts (consumer accounts being partner numbers within the 5000000000 range).  There are times however, that they will accidentally edit master data for dealer, or other non-consumer accounts.

For this reason, we want to prohibit editing of the customer master records for non-consumer account types in the IC WebClient.

Please provide your suggestion to solve this.

Note: we are using CRM 5.0 version

Regards,

Abhishek