Request Unblocking 
Business partner data or master data of type customer, vendor, or contact person may have been blocked accidentally. The Request Unblocking report (transaction BUP_REQ_UNBLK) is used to create a request for unblocking such data. The requests are approved or rejected by a user authorized for unblocking data.
For more information about unblocking business partner data, see Block and Unblock Business Partner Data
For more information about unblocking customer and vendor master data, see Unblock Customer and Vendor Master Data
Prerequisites
You have defined the reason codes for unblocking in Customizing under 
Data Protection 
Blocking and Unblocking of Data Define Reasons for Unblocking Business Partner 
.
Features
Object Details
Select the type of data that you want to unblock, whether business partner data, or customer, vendor, or contact person master data.
When you request unblocking of business partner data, the option to approve the unblocking is available on the selection screen itself.
Objects
For data of type customer or vendor, you can also enter the specific company code to which the customer or vendor is assigned.
Reason Detail
Specify the reason code and description when making the unblocking request. The reason code and description are displayed when the authorized user uses the Block and Unblock Business Partner Data report (transaction BUPA_PRE_EOP) or Unblock Customer and Vendor Master Data report (transaction CVP_UNBLOCK_MD) to view the requests that have come in for unblocking.
Activities
To access this report, on the SAP Easy Access screen, choose Cross-Application Components Data Protection Request Unblocking .
This report sends a notification to the user with the SAP_CA_BP_DP_ADMIN role who has the authorization to unblock business partner or customer and vendor master data. The user periodically checks for requests for unblocking data.