Not able add to account in Fixed Asset "Asset Received But Not Billed"

We are using hosted ERP next. For Purchase invoice it is giving error

Please “set default Asset Received But Not Billed in Company ABC Pvt Ltd”

Tried adding account in fixed . It doesn’t allow to add

@Vikas_Shah what error you facing ? open you company page , scroll down to “default asset received but not billed” and select your account