Throw a custom exception on unsupported operation

diff --git a/fints/client.py b/fints/client.py
index b90b836790a3639192ec07d7b975067ca3255a0f..cf0e9aa5f54549a2a4d96a7cc900742984c1f08d 100644 (file)
--- a/fints/client.py
+++ b/fints/client.py
@@ -690,8 +690,7 @@ class FinTS3Client:
                 if hiccxs.parameter.sum_amount_required and control_sum is None:
                     raise ValueError("Control sum required.")
                 if book_as_single and not hiccxs.parameter.single_booking_allowed:
-                    # FIXME Only do a warning and fall-back to book_as_single=False?
-                    raise ValueError("Single booking not allowed by bank.")
+                    raise FinTSUnsupportedOperation("Single booking not allowed by bank.")
 
                 if control_sum:
                     seg.sum_amount.amount = control_sum
@@ -756,8 +755,7 @@ class FinTS3Client:
                 if hidxxs.parameter.sum_amount_required and control_sum is None:
                     raise ValueError("Control sum required.")
                 if book_as_single and not hidxxs.parameter.single_booking_allowed:
-                    # FIXME Only do a warning and fall-back to book_as_single=False?
-                    raise ValueError("Single booking not allowed by bank.")
+                    raise FinTSUnsupportedOperation("Single booking not allowed by bank.")
 
                 if control_sum:
                     seg.sum_amount.amount = control_sum

diff --git a/fints/exceptions.py b/fints/exceptions.py
index c34c3ffc94c16fb9c5329916ef16543baa542670..ee9f2ee0a7d6b925e6fcf03f50e4814b3cea0e4e 100644 (file)
--- a/fints/exceptions.py
+++ b/fints/exceptions.py
@@ -18,3 +18,7 @@ class FinTSDialogInitError(FinTSDialogError):
 
 class FinTSConnectionError(FinTSError):
     pass
+
+
+class FinTSUnsupportedOperation(FinTSError):
+    pass
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