RE: Not able to create child cases
Symptom
Org has been migrated from v8.2 to v9 or had a minor update Jan 19th or 20th.
From an account or contact record, try to create a new incident record (from custom grid or related view) and noticed an error message:
Message: System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.InvalidOperationException: CRM Parameter Filter - Invalid parameter 'is_create_child_case=true' in Request.QueryString on page /form/Data.aspx
The raw request was 'GET /form/Data.aspx?_CreateFromId=2167a7b4-381a-e611-a847-005056970019&_CreateFromType=2&counter=1547745840170&etc=112&extraqs=%3f_CreateFromId%3d%257b2167A7B4-381A-E611-A847-005056970019%257d%26_CreateFromType%3d2%26etc%3d112%26is_create_child_case%3dtrue%26process%3d&formid=077fe6ef-90c6-42ba-a32b-fa622ec7528e&is_create_child_case=true&oid=&pagemode=iframe&pagetype=entityrecord&process=' called from orgsample.crm2.dynamics.com/main.aspx.
Cause
Missing a specific parameter on the form
Resolution
-Go to Customization area > Customize the System
-Open Case entity > Forms
-Localize the main form and edit properties
-Go to Parameters and add new parameter
Name: is_create_child_case
Type: Boolean