Error executing connection method with WS- wsdl

Good day.
I need a little help.
I have some problem running the access procedure to the web service mapped on my WDJ.
I did all the procedure for use ro wsdl, did the mapping of the fields in my context.
after it was run method to send the connection parameters.
But when running:
wdContext.currentConsultaSincronaElement().setChaveAcesso("XXXXXXXX-4487-4AE6-A41E-10F7808AYYYYYYY");
Is the error below:
java.lang.NullPointerException: while trying to invoke the methodnet.mdm.bp.wd.search.wd.comp.mastercompnew.wdp.IPrivateCreateFirstCompView$IConsultaSincronaElement.setChaveAcesso(java.lang.String) of a null object returned from
net.mdm.bp.wd.search.wd.comp.mastercompnew.wdp.IPrivateCreateFirstCompView$IContextNode.currentConsultaSincronaElement()
What can be happening? The mapping is correct with the fields of WS.
Already checked one by one.

hi carlos,
have you checked the collection cardinality of your input context?
the generated/Initial value is 0..1. so your currentNodeElement is probably null.
if so - set the value to 1..1 and try it again.
regards,
christian

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