IR indicators of item cat. & and account assignment cat. & incompatible

What causes this issue?

Although invoice receipts are mandatory for the specified item, they
are not defined in the case of either the <GL:item_category>item
category</> or the <GL:account_assignment_category>account assignment
category</>.

How to fix this error?

Check the IR indicator for the item category and the account assignment
category. In both cases, the IR indicator must be set if the indicator
<LS>Invoice receipt binding</> is set.
<DS:SIMG.SIMG_CFMENUOLMEOMH4>Define external representation of item
categories</>
<DS:SIMG.SIMG_CFMENUOLMEOME9>Maintain account assignment categories</>

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