Logistic's Contract with Funds Commintment

Hi All.

I've two questions about Logistic's Contract with Funds Commintment.

First:

I did the customization of earmarked fund in FM and MM with the Commitment Plan flaged in the Contract's document type.

When a create a Contract(ME31K) only with Short Text(w/o Material) and blank account assignment, I'm able to create a Commitment Plan.

But, if I use a account assignment = K, I cant create a Commitment Plan.

This is because I most use the field Earmarked Funds in the Account Assignment at Contract's itens details?

If yes, I've to create a Earmarked fund document previusly of Contract? Or it will be created automatcaly?

Secund:

Our Spro is not enabling FM activity "Define Permitted Types of Earmarked Funds Documents in Purchase Documents".

We are using Former Budgeting, our EA-PS version is 600 (SAPKGPPD25) and SAP-APPL is 617(SAPK-61705INEAAPPL).

Yes, we know that we have to upgrade our EA-PS version, but we are trying to avoid this.

Thanks in advance.

Regards.

Leonardo.