What causes this issue?

While editing declarable data you have done one of the following:
Navigate to another object
Execute another function
Switch to another view tab
Change the selection in the requirement revisions list or in the product
structure tree

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The system terminates editing of the declarables substances and the
<LS>Verify Compliance Information</> dialog box appears.

How to fix this error?

Review the result of the executed checks and, if the requirement
revision is in status <LS>In Process</>, you can enter a remark and
release the revision by closing the dialog box.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.