Applies to Pega Platform 7.2-8.7

Short Description  

This article guides you on troubleshooting issues causing USING_PAGE_ERR error.

Symptom

Error

Explanation

Solution

Symptom 

USING_PAGE_ERR:Using page was not found error occurs on clicking the Check-in button for an activity. 

Error 

USING_PAGE_ERR:Using page was not found. Please try again. 

Explanation 

An activity contains executable code in its Java step. When you are on an HTTP connection, firewall scans the incoming request and this executable code is treated as vulnerability. Firewall terminates the connection considering it as a malformed request that contains executable code. Hence, the error occurs. 

Solution 

Use HTTPS instead of HTTP. The request is encrypted on the HTTPS connection. Hence, firewall does not terminate the connection.