While Integrating Paypal why i got this Error?
<p>Please Anyone can tell me why i got this kind of error:</p>

<pre><code>ACK=Failure&amp;L_ERRORCODE0=81002&amp;L_SHORTMESSAGE0=Unspecified%20Method&amp;L_LONGMESSAGE0=Method%20Specified%20is%20not%20Supported&amp;L_SEVERITYCODE0=Error
</code></pre>
