As i have checked in the form the fields of invoice type ,series, no are enterable fields, the values are not validated by the lov , so user has entered the wrong no and saved the GRN..
Created attachment 2312 [details] Invoice
Dear Sir, As per our conversation enclosed invoice no. for your reference. Actual Invoice raised from Noida Depot I1/73/TI21/5034 but received in Gujarat I1/73/TI21/5035