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#### Description <!-- Describe your changes in detail --> Carrier id 0 might be a valid carrier number(e.g. for Germany D000-D999 are valid). Return negative carrier id in case of failures.

If all ok, I'd like to backport this to 5.8, 5.7 and 5.6 You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/3775

-- Commit Summary --

* pdb: Return negative carrierid for failures

-- File Changes --

M src/modules/pdb/pdb.c (14) M utils/pdbt/pdb_server.c (2) M utils/pdbt/pdb_server_backend.c (4)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3775.patch https://github.com/kamailio/kamailio/pull/3775.diff