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content/docs/NAVPatterns/3-cal-coding-guidelines/readability/variable-naming/index.md

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+title = "Variable Naming"
+weight = 1420
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+Variables that refer to a C/AL object must contain the objects name, abbreviated where necessary.
+
+A variable must begin with a capital letter.
+
+Blanks, periods, and other characters (such as parentheses) that would make quotation marks around a variable necessary must be omitted.
+
+If a variable is a compound of two or more words or abbreviations, each word or abbreviation should begin with a capital letter.
+
+Bad code
+
+```al
+...
+    WIPBuffer@1002 : Record 1018
+...
+OBJECT Table Job WIP Buffer
+```
+
+Good code
+
+```al
+...
+    JobWIPBuffer@1002 : Record 1018
+...
+OBJECT Table Job WIP Buffer 
+```
+
+Bad code
+
+```al
+...
+    Postline@1004 : Codeunit 12;
+...
+OBJECT Codeunit Gen. Jnl.-Post Line
+```
+
+Good code
+
+```al
+...
+    GenJnlPostLine@1004 : Codeunit 12;
+...
+OBJECT Codeunit Gen. Jnl.-Post Line 
+```
+
+Bad code
+
+```al
+LOCAL PROCEDURE HandleCustDebitCredit@17(...;"Amount (LCY)"@1001 : Decimal;...);
+BEGIN
+    IF ((... ("Amount (LCY)" \> 0)) ...) OR
+        ((... ("Amount (LCY)" < 0)) ...)
+    THEN BEGIN
+    ...
+```
+
+Good code
+
+```al
+LOCAL PROCEDURE HandleCustDebitCredit@17(...;AmountLCY@1001 : Decimal;...);
+BEGIN
+    IF ((... (AmountLCY \> 0)) ...) OR
+        ((... (AmountLCY < 0)) ...)
+    THEN BEGIN
+    ...
+```