How to Set Validation to verify the property contains only Alpha numeric values.

Summary:

We need Validation to verify the property that contains only Alpha numeric values.

• We have property with data type as memo and want to verify that it must start with alphanumeric values.
• Need validation to check if the value contains only alphanumeric values and space. (property level restriction is not recommended).

Content (required):

• We have property with data type as memo and want to verify that it must start with alphanumeric values.
• Need validation to check if the value contains only alphanumeric values and space. (property level restriction is not recommended).

Version (include the version you are using, if applicable):