MRBR won't release invoice with manual block when called in a custom program.

I person created a programme that releases automatic and manually blocked invoices. However, it is not releasing the invoices with manual block. I'm utilizing BDC information to merchandise it successful MRBR.

For automatically blocked invoice the BDC information is:

PA_XAUTO = X

PA_XSPGR = X

For manually blocked the BDC information is:

PA_XMANU = X

PA_ZLSPR = X

Since I was not capable to merchandise the invoice with manual artifact successful my ZPROGRAM, I tried to merchandise successful MRBR 

With the parameters of COmpany code, Fiscal YEar, Supplier, and the parameters beneath and it was successfully released. 

How bash I cheque wherefore I'm getting sy-subrc = 1001 erstwhile releasing the invoice utilizing my zprogram? 

Thanks