Invoice on block due to missing tax statement

Hi

I have one issue

There is a debit memo and credit memo and not being released to accounting. SAP error says Tax statement item missing for tax code OC. I have checked with our Master Co-ordinator and Finance team and both the tax status anc composite costs have been entered so we're not sure why its not releasing. The debit memo # is 50963828 and credit memo # is 1073684940.

Regards

Sree