diff --git a/docs/source/conf.py b/docs/source/conf.py
index 57b253090f83217d2830f7fd7240ffe6aabb3148..38af583cffad5bb6cc39c40f8c68f91a06da1544 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -12,6 +12,7 @@
 #
 import os
 import sys
+
 import django
 
 sys.path.insert(0, os.path.abspath("../../"))
@@ -20,12 +21,12 @@ django.setup()
 
 # -- Project information -----------------------------------------------------
 
-project = 'Sage Validation'
-copyright = '2024, GÉANT'
-author = 'GÉANT'
+project = "Sage Validation"
+copyright = "2024, GÉANT"
+author = "GÉANT"
 
 # The full version, including alpha/beta/rc tags
-release = '0.1'
+release = "0.1"
 
 
 # -- General configuration ---------------------------------------------------
@@ -34,13 +35,13 @@ release = '0.1'
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.napoleon',
-    'sphinx_autodoc_typehints',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.napoleon",
+    "sphinx_autodoc_typehints",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -53,9 +54,9 @@ exclude_patterns = []
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+html_theme = "alabaster"
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
\ No newline at end of file
+html_static_path = ["_static"]
diff --git a/docs/source/validations.rst b/docs/source/validations.rst
index 13bcc924a0d12787957fcbf346e91af60c155f65..5f2042ced17773463685c99c6ca99a4beaafc69b 100644
--- a/docs/source/validations.rst
+++ b/docs/source/validations.rst
@@ -60,4 +60,8 @@ The following table describes the validation rules applied when uploading a CSV
    * - Checks
      - `...TaxRate`
      - Validate against `[Tax code]` in `dbo.meoValidVAT`.
-     - Ensure valid tax rates.
\ No newline at end of file
+     - Ensure valid tax rates.
+
+    * - Checks
+    - `ChequeCurrencyName`, `ChequeToBankExchangeRate`, `ChequeValueInChequeCurrency`
+    - Cheque fields must be empty.
\ No newline at end of file