Improve handling of erroneous MARC bib Leader positions that cannot be edited via quickMARC

Background: At this time, libraries are load MARC bib record directly into SRS. We are now getting reports whereby libraries are loading records with erroneous MARC bib Leader positions 20-23 values. When the cataloger edits the record via quickMARC and hits Save then user receives an error message because the Leader positions 20-23 values are wrong AND since we do not allow for those positions to be updated, the cataloger has no choice but to use data import to update the values. 

Requirements: 

• Edit MARC Bib record: When a SRS bib Leader field contains invalid values for the positions: 00-04, 10-11, 12-16, 20-23 then update the leader positions with the valid values upon user hitting Save
• Verify that Derive a new MARC bibliographic record also updates Leader position values to valid ones when invalid values have been saved. 

Acceptance criteria

Given MARC bib record is loaded into the system with positions 20-23 values  

position 20=4

position 21 = e

position 22 = /

position 23 = 5

or any invalid value in any of these positions

When user edits the record 

AND hits Save 

AND the only quickMARC errors are found with positions 20-23 values :

 Then allow the save to be successful and update positions 20-23 values TO the only acceptable values:

position 20=4

position 21 = 5

position 22 =  0

position 23 = 0