Pseudo-Algorithm for RemoveInvalidItems

1. Get the Quote and Quote Item business components.

2. Check the Invalid input argument:

   If Invalid = N, go to step 4.

3. For each record in the Quote Item business component, check the Invalid Flag field:

   If the field value is Y, delete the record.

4. Set the Error Message output argument if there is any error;

   If Return Error Code = N, do not return an error;

   Else return an error.