Need to restrict triggering of workflow only once(first time).

Hi guys,
I hv a requirement to trigger the workflow only once(first time).
whatever is the the condition/changes in document, it should not trigger for second time.
do we hv any options available for this........
thanks in advance...
santosh.

Hi susan,
Below is the requested information,
Release : ECC 6.0
we are working on custom WF for ECO creation(CC01).
Description,
ECO is created in SAP by legacy system, thru bapi CCAP_ECN_CREATE, the WF will take the editing of the material in that ECO to different departments like MRP, accounting, sales,quality etc.... & respectively creates the views.
we cannot use CREATE event, bcos first the ECN(CC01) is created by bapi & further bapi creates the material & inserts it into ECN again, which is CHANGING the document. once this is done, our WF should trigger.
As we dont have CHANGE event in ECM BO, i am using CREATE event & settting it for ON CHANGE in SWEC t-code.
Bottomline is , it is triggering as soon as any changes happens.
But, we want it to restrict for one time triggering.
Regards.
santosh.

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