cableman/alma — comment on commit 714f26cfa03897dcdeef5cbc6f9d22ee2b35ec2e
File: lib/AlmaClient/AlmaClient.class.php line 536
By cableman:

No it should be OR. The message attribute dos not exists in the alma response the first time a loan is renew. If you renew the loan once more the message is set in the response.

So it could maybe be changed to: if ($renewable == 'yes')