When the last lines of an InDesign poster are absent from the PDF, first check whether the text frame contains overset text. The words may still exist in the document without fitting in its visible frame. Re-exporting at a higher image resolution will not create room for those words.
Compare the end of the approved text
Keep the approved wording outside the layout as a reference. Identify the final complete sentence, date or booking instruction that must appear. Compare that exact ending with the page, rather than judging whether the overall poster looks full enough.
Adobe's document-check tutorial identifies a red plus on a text frame as an overset indicator and shows Preflight locating overset text. Its relevance here is the relationship between frame capacity and hidden text, not a guarantee that a green preflight state proves every sentence is correct. Adobe: Check a document before sharing.
Diagnose the layout before shortening the message
This is a proposed investigation, not an executed application test. Save a duplicate and select the affected text frame. Record its overset indicator and the visible final phrase. On the duplicate, temporarily enlarge the frame into unused space and inspect what appears.
If the missing ending becomes visible, that supports a capacity problem. Undo the diagnostic enlargement before designing the real correction. If no expected words appear, inspect the underlying story and approved copy; the text might never have been placed, might be in another frame, or might differ from the source.
Do not delete the ending merely to clear an error. A missing admission condition or venue change can matter more than an attractive footer. Decide with the content owner what may be edited and what must remain verbatim.
Choose a deliberate fit
Possible design corrections include a wider text area, another properly placed frame, less decorative copy or an approved wording change. Review line spacing and text size together at intended reading distance. A frame that technically fits but requires unreadably small lettering is not a successful repair.
For a fictional workshop poster, protect the title, date, location and booking deadline as required fields. Move a decorative quote to another channel before sacrificing those fields. This is an editorial prioritization example, not a claim that a particular font size fits all posters.
Recheck after the final edit
Use a compact acceptance record: approved final phrase; layout final phrase; PDF final phrase; overset status; intended-size readability. The three text endings must agree, and the PDF must be reviewed independently of the working view.
Pass when required copy is complete, no relevant story is overset and the final text remains readable. Fail if clearing the indicator silently removes required wording, or if an older PDF is reviewed instead of the new export.
Imagild may help create the visual artwork. Text-frame flow, Preflight and exact PDF layout are external InDesign work. Keep exact event information as reviewed text rather than regenerating it inside the image.