BW query connection, no data available in Dashboard

Hi Experts,

I have a problem with a Dashboard that I'm developing, the problem is that the SAP netweaver BW connection (I have 3 connection with problems) has some intermittence, with the same filters sometimes They returns data correctly but sometime don't show any data. I check the filters that I'm sending but there always the same values for this test, I also check with fiddler application the XML send between the systems and looks the same. Has Anyone had a similar problem?

These are some screenshot of part the XML sent between systems, the first results OK, but the second return no data.

XML SEND TO BW - TEST 1

RESPONSE OK - TEST 1

XML SEND TO BW - TEST 2

You can see that the query Variables receives the same values like test 1.

RESPONSE NO_DATA_AVAILABLE - TEST 2

Thanks for any help!

Regards,

Rosmar Torres