Hi ritesh,
As you are calling an webdynpro application for the approval the same cannot be executed through ECC.
Also do check whether you have maintained the task entry (TS18900034) properly in SWFVISU transaction,
APPLICATION | ClaimAdvanceApproval_IN |
DYNPARAM | WI_ID=${item.externalid}&appno=00002 |
NAMESPACE | SAP |
SYSTEM_ALIAS | SAP_ECC_HumanResources |
Also from UWL also the approver cannot approve the request as there is a separate service for the approval of the IT-Declaration request under the Payment area.
Regards,
Mithun K