Created attachment 4396 [details] capture image When I try edit the Subfield Constraints in "MARC framework" I can edit all subfields but subfield "0" does not change.
Created attachment 4518 [details] [review] Proposed patch to allow modify subfield 0 When trying to modify the subfield "0" on a field in the MARC subfield structure admin -> Tag xxx Subfield Constraints, the boolean condition on liblibrarian fails for the initial "0" value. Modified condition to allow the value "0".
Created attachment 6286 [details] [review] Signed-off patch Before applying the patch it was not possible to change the contents of of the "Text for librarian" field to "0." After, it is possible to set that value to "0."
QA comment: small patch, good test plan, works, passed QA Patch pushed, please test
Included in 3.6 prior to 3.6.5.