When we click the submit button it takes about 45 to 60 seconds for the end user to receive a confirmation screen in Identity Portal screen or after TEWS submission.
Follow the below steps :
Add the following two properties to IDM Management Console > Environment > Advanced Settings > Miscellaneous
1)ImmediateTEWSResponse = true
2)ImmediateTEWSResponseAfterValidation = true
The ImmediateTEWSResponse property only applies to TEWS execution operations and protected tasks. The ImmediateTEWSResponse property only applies to the JBoss/Wildfly family of application servers.