How to add two different formulas in column validation SharePoint

Question

Need to restrict the user from entering special characters and to make the input length equals to 24 i.e the user can enter only alphabets and numbers of length 24.

Answer 1

Use below formula that will prevent saving special characters in list:

=AND(IF(ISERROR(FIND(",",
[ColumnName])),TRUE),IF(ISERROR(FIND("&",
[ColumnName])),TRUE),IF(ISERROR(FIND("!",
[ColumnName])),TRUE),IF(ISERROR(FIND("@",
[ColumnName])),TRUE),IF(ISERROR(FIND("~",
[ColumnName])),TRUE),IF(ISERROR(FIND("#",
[ColumnName])),TRUE),IF(ISERROR(FIND("$",
[ColumnName])),TRUE),IF(ISERROR(FIND("%",
[ColumnName])),TRUE),IF(ISERROR(FIND("*",
[ColumnName])),TRUE),IF(ISERROR(FIND("(",
[ColumnName])),TRUE),IF(ISERROR(FIND(")",
[ColumnName])),TRUE),IF(ISERROR(FIND("-",
[ColumnName])),TRUE),IF(ISERROR(FIND("+",
[ColumnName])),TRUE),IF(ISERROR(FIND(":",
[ColumnName])),TRUE),IF(ISERROR(FIND(";",
[ColumnName])),TRUE),IF(ISERROR(FIND("[",
[ColumnName])),TRUE),IF(ISERROR(FIND("]",
[ColumnName])),TRUE),IF(ISERROR(FIND(".",
[ColumnName])),TRUE),IF(ISERROR(FIND("/",
[ColumnName])),TRUE),IF(ISERROR(FIND("\",
[ColumnName])),TRUE))

• Change the maximum number of characters for that column to "24".

• It will restrict users from entering more than 24 characters

Reference: Prevent special characters in list item

Answer 2

You could use the below formula to validate enter only numbers of length 24:

=IF(LEN([field])=24,ISNUMBER([field]+0),FALSE)