HU editor: Cannot receive stand alone TUs by default

[teosarca]

Is this a bug or feature request?

bug

What is the current behavior?

Which are the steps to reproduce?

• create an purchase order for some standalone HUs (e.g. Paloxe)
• open Receipt candidates, select the line and try to receive using the default button
  => got an error about "infinite capacity"

What is the expected or desired behavior?

• receive one TU

note: this task is not covering the issues from "receive with config" process.

[teosarca]

@metas-ts pls cherrypick to master

[metas-ts]

@teosarca done

[metas-dh]

Results of IT1
tested on w101

• receive a standalone TU like Paloxe, using default button (set with 1 Paloxe): no error or exception, working fine: OK