Unstable service is failing sometimes with error 'Resource not found for the segment'

Hi all,

I have written an OData service which is not stable. I am using a  set of URLs which I just copy and paste into the address bar. In most cases, the services work fine but sometimes I get the following error:

The following error message is shown on the HTML page: Resource not found for the segment

And the Gateway Error log transaction shows this error: Resource mobile_orders('000000819740') not defined in Metadata

After a while, I can use the same URL which was causing an error and all over sudden it is working again.

Any recommendation how to fix that issue?

Many thanks for your help.

Regards,

Andreas