In-house cash (IHC) activation

Hi,

In tcode BF11 or table TBE11 there are activations to be performed for modules. The activation of value "IHC" is turned off right now in our SAP system, however, it seems that it was once active since the IHC options are reflected on the IMG menu.

We are implementing IHC module for the first time and we'd like to activate IHC using the tcode or through the table update as mentioned.

As such, I'd like to seek advice on the following:

1)  Supposed that IHC was once activated and then somebody turned it off, does this mean that it is still active? Will there be any problem when we want to set the check box for IHC even if it is active already?

2) What difference does it make when this value is reactivated?

Thanks in advance.

Regards,

Alvin