When trying to submit a call Online that has Samples recorded, the Submit button is not responding after clicking on it.
The call has a Promotional Item and the Company Product checkbox is unselected for the Product.
The Company Product checkbox must be selected on both the parent product record and the child product record in order to be available for Call Sampling.
Note: This issue is not happening Offline, because the Company Product checkbox is not validated when Submitting a Call Offline.
CRM Help Documentation: Configuring Products for Call Sampling