zoho campaigns api response error

zoho campaigns api response error

Hi,

I am trying to use the campaigns API to add a contact to a mailing list automatically when an user submits a form in my homepage. I get the following response on running the campaigns api 

<html><head><title>ZGS - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - </h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u></u></p><p><b>description</b> <u>The server encountered an internal error () that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>com.adventnet.iam.security.IAMSecurityException: PATTERN_NOT_MATCHED
com.adventnet.iam.security.ParameterRule.checkForAllowedValueRegex(ParameterRule.java:692)
com.adventnet.iam.security.ParameterRule.validateParamValue(ParameterRule.java:623)
com.adventnet.iam.security.ParameterRule.validateParamValue(ParameterRule.java:572)
com.adventnet.iam.security.ParameterRule.validateParam(ParameterRule.java:463)
com.adventnet.iam.security.ParameterRule.validate(ParameterRule.java:368)
com.adventnet.iam.security.URLRule.validateURLRule(URLRule.java:358)
com.adventnet.iam.security.SecurityFilter.doFilter(SecurityFilter.java:132)
</pre></p><p><b>note</b> <u>The full stack trace of the root cause is available in the ZGS logs.</u></p><HR size="1" noshade="noshade"><h3>ZGS</h3></body></html>

Please help me with this. 
Thanks in advance. 


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