Dear Deepak,
Upon execution of TPM1 the error 'TPM_TLV1028' is hard coded as an error
in case a "position relevant" flow is selected which is in status
"planned".
The open for the future, update type DE1500, have quantity category 0001, therefore this is position relevant and it has to be fixed before you execute valuation. For more detailed reason, please see the long text of the message 'TPM_TLV1028'.
Best regards,
Jasmine