--- a
+++ b/qiita_ware/exceptions.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+# -----------------------------------------------------------------------------
+# Copyright (c) 2014--, The Qiita Development Team.
+#
+# Distributed under the terms of the BSD 3-clause License.
+#
+# The full license is in the file LICENSE, distributed with this software.
+# -----------------------------------------------------------------------------
+
+from qiita_core.exceptions import QiitaError
+
+
+class QiitaWareError(QiitaError):
+    """Base clase for all Qiita-ware exceptions"""
+    pass
+
+
+class UserDoesNotExistsError(QiitaWareError):
+    """Error used when a user does not exist"""
+    pass
+
+
+class AnalysisDoesNotExistsError(QiitaWareError):
+    """Error used when an analysis does not exist"""
+    pass
+
+
+class JobDoesNotExistsError(QiitaWareError):
+    """Error used when a job does not exist"""
+    pass
+
+
+class StudyDoesNotExistsError(QiitaWareError):
+    """Error used when a study does not exist"""
+    pass
+
+
+class ComputeError(QiitaWareError):
+    """A compute error happened"""
+    pass
+
+
+class EBISubmissionError(QiitaWareError):
+    """Error used when EBI cannot be submitted"""
+    pass