[SalesForce] Submitted user is also getting Reassign | Approve/Reject button on record

I think what you want is :

1) Submitter1 edit and submit the record to Approver1

2.1) Approver1 review/edit record and then must Approve --> the record is going to Approver2. Your record will still be in "Pending" for Approver2

2.2) Approver1 reject --> go to final reject actions, unlock records and Submitter1 will have to submit again

3.1) Approver2 approves --> your record is now approved, do whatever you want (field update, email alert)

3.2) Approver2 rejects --> you have 2 options here, go back to step1(=Approver1) OR go to final reject actions. In final reject actions you can unlock your record(+ field updates), so the oirignal submitter can edit and submit again.

Of course in your approval process setting, you must to enable "System Admin AND approver can edit records"

I hope that can help

Andrew, The SFDC doc is maddeningly vague on this but the example in the Apex doc does what you need.

The line Approval.ProcessResult result = Approval.process(req1); will submit your record to the Approval Process engine that in turn will select a qualifying approval process. The object result can be used to fetch the workItems and then you can simulate approval/reject actions that the Approval Process engine will then execute. Then you can query your database to see if the approval processes as built in the force.com UI are functioning as expected.

public class TestApproval {
void submitAndProcessApprovalRequest() {
    // Insert an account
    Account a = new Account(Name='Test',annualRevenue=100.0);

    insert a;

    // Create an approval request for the account
    Approval.ProcessSubmitRequest req1 = 
        new Approval.ProcessSubmitRequest();
    req1.setComments('Submitting request for approval.');
    req1.setObjectId(a.id);

    // Submit the approval request for the account
    Approval.ProcessResult result = Approval.process(req1);

    // Verify the result
    System.assert(result.isSuccess());

    System.assertEquals(
        'Pending', result.getInstanceStatus(), 
        'Instance Status'+result.getInstanceStatus());

    // Approve the submitted request
    // First, get the ID of the newly created item
    List<Id> newWorkItemIds = result.getNewWorkitemIds();

    // Instantiate the new ProcessWorkitemRequest object and populate it
    Approval.ProcessWorkitemRequest req2 = 
        new Approval.ProcessWorkitemRequest();
    req2.setComments('Approving request.');
    req2.setAction('Approve');
    req2.setNextApproverIds(new Id[] {UserInfo.getUserId()});

    // Use the ID from the newly created item to specify the item to be worked
    req2.setWorkitemId(newWorkItemIds.get(0));

    // Submit the request for approval
    Approval.ProcessResult result2 =  Approval.process(req2);

    // Verify the results
    System.assert(result2.isSuccess(), 'Result Status:'+result2.isSuccess());

    System.assertEquals(
        'Approved', result2.getInstanceStatus(), 
        'Instance Status'+result2.getInstanceStatus());
}
}