Problem with Special Characters in Catalina API Query String

I ran into an issue earlier where I was trying to retrieve a customer using the Catalina Technology API for Dynamics SL. But the problem was that the CustID had special characters in it. In this case, the CustID looked like this: “BB& 1 2

So, there was a prefix of “BB”, then there was an ampersand, and then there were two spaces, then the number 1, two more spaces, then the number 2.

First of all, I had to URL encode the CustID that was getting passed to my API so that the call looked like this:


You can see that & was replaced by %26 and a space was replaced by %20.

Now, that is fine, but then .NET was having problems with the & (even encoded) in that it had an error like this:

A potentially dangerous Request.Path value was detected from the client (&).

This is remedied by looking at the web.config of your ctDynamicsSL application. Search for the keyword: httpRuntime. Once you found that, if you don’t already have an attribute requestPathInvalidCharacters in that key, add it. This is a good default one:

<httpRuntime requestPathInvalidCharacters="&lt;,&gt;,%,&amp;,:,\,?" />

Then from that remove the &amp; so that you will allow the & to go in. That way, your final httpRuntime should look similar to this:

<httpRuntime requestPathInvalidCharacters="&lt;,&gt;,%,:,\,?" />

As you can see above, I removed &amp;, from the invalid characters. Thus allowing the ampersand to be allowed.

NOTE: If your httpRuntime has other attributes like the .NET version, etc. Leave those alone. Just worry about the requestPathInvalidCharacters attribute and it’s value.

Keep Your Business Running
Call Custom Stored Procedure via Catalina’s RESTful API for Dynamics SL

Leave a Reply

Your email address will not be published / Required fields are marked *