[v4.49] Placeholder limitations

If placeholders are applied in documents, it must be ensured that the signature quality is the same within an iteration (e.g. approvals in iteration 1, qualified signatures in iteration 2, etc.).

If placeholders with different signature qualities are inserted within the same iteration, the document cannot be uploaded and an error message is displayed. In the example in figure 1, a placeholder for approval and one for signature were inserted for iteration 1, which leads to the error message during the upload (see figure 2).

Figure 1: Different signature qualities for the same iteration 

Figure 2: Error message for invalid placeholder