Per the EspoCRM Attachment API doc (documentation.espocrm.com/development/api/attachment/),
the binary is sent in the "file" field as a data URI. The previous
extra "contents" alias was a legacy convention that strict tenants
reject with HTTP 400 (with an empty body, so the user only ever saw
"שמירת הקבצים נכשלה"). Drop "contents" — match the documented payload:
{
"name": "report.pdf",
"type": "application/pdf",
"role": "Attachment",
"relatedType": "Document",
"field": "file",
"file": "data:application/pdf;base64,..."
}
Folder dropdown: previously case-scoped only. The /Document filter by
parentId returned 400 on this tenant and case-scoped queries can be
fragile across versions. Now: try case-scoped first (so the most-
relevant folders surface); if it comes back empty or errors, fall back
to ListDocumentFoldersAsync (the full tenant list). The user always has
something to choose from, and the "(בלי תיקייה)" sentinel still works
as a "no folder" pick.
Tests: 39 passing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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