Check your data declaration:
data: OUTPUT type ZWSZIMRA_SUBMIT_INVOICES_SOAP.
data: INPUT type ZWSZIMRA_SUBMIT_INVOICES_SOAP1-INVOICE.
Check your data declaration:
data: OUTPUT type ZWSZIMRA_SUBMIT_INVOICES_SOAP.
data: INPUT type ZWSZIMRA_SUBMIT_INVOICES_SOAP1-INVOICE.