From dd193297e6760c89d659d1d67036bf06e13f956d Mon Sep 17 00:00:00 2001
From: paul019 <39464035+paul019@users.noreply.github.com>
Date: Thu, 8 Aug 2024 00:07:03 +0200
Subject: [PATCH] Allow for zero as uncertainty

---
 src/api/parsers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/api/parsers.py b/src/api/parsers.py
index 87bbd921..9597c620 100644
--- a/src/api/parsers.py
+++ b/src/api/parsers.py
@@ -209,7 +209,7 @@ def _parse_uncertainty_value(value: Union[float, int, str, Decimal]) -> Value:
     else:
         return_value = Value(Decimal(value))
 
-    if return_value.get() <= 0:
-        raise ValueError(error_messages.FIELD_MUST_BE_POSITIVE.format(field="Uncertainty"))
+    if return_value.get() < 0:
+        raise ValueError(error_messages.FIELD_MUST_BE_NON_NEGATIVE.format(field="Uncertainty"))
 
     return return_value