Workflow cannot be activated after upgrade to ECC 6.3

We have an existing Workflow that has not been modified since a year. Now our system has been upgraded to ECC 6.03 and the Workflow gives an ERROR.

When performing a check we receive a number of warnings with the description u2018'The node violates the block structure required' (WD344) and 1 ERROR u2018Subsequent node not foundu2019. (WD432). Block correction is not possible.

u2022 I checked the SWU3 and there everything is ok.

u2022 Also performed the SWU_OBUF.

u2022 By using tx PFTC (tip from another SDN message) I regenerated the agent assignment by clicking on Additonal Task -

> Agent Assignment---> Maintain and clicking on the red and white Icon for UPDATE INDEX (SHIFT+F1)

u2022 I used SWDD to generate a new version in the hope this should resolve the problem but the result is still the same.

u2022 I have taken a look to oss note 1068627 but still did not find a solution.

Kind regards,

Kris Verschueren.