ODS Can't Activate by invalid character

Hi all,

I have a problem about ODS can't activate.

I have loaded a full request from SAP R/3 into ODS (SAP BW) is completed but my request can't activate. I have tried check error and I met error display as

Value 'ELAMES ' (hex. '454C414D45530D0A2020205B ') of characteristic ZREQUSTER contains invalid character

and then I check error value at PSA that its have ## at this value as "ELAMES ##"

My solution is

1. I deleted request at ODS.

2. go to PSA and deleted ## at error value and then go to RSA1 > PSA > Start update Immediatly to data target

this solution can resolve this problem but its manual solution.

Please help me about better solution for resolve this problem.

Hope its help

Sue.