Probability score: 0.7  

Question improvement suggestion: Provide the exact error message and any relevant details about the source file format and content.  

In the meantime, based on the information you have provided, here is a suggested answer to your question:  

Hello,  

To resolve the "Index entry has invalid format" error in Trados 2021, please follow these steps:  

**Step 1:** Check the index entries in your source file. Ensure that all curly quotes (“ ”) are replaced with straight quotes (" "). Each index entry should have a complete set of two straight quotes.  

**Step 2:** Verify that curly brackets are used correctly at the start and end of each index entry.  

**Step 3:** Inspect the HTML code in the CDATA section of your source file for any doubled angled brackets or other formatting issues.  

**Step 4:** Ensure that the content is valid HTML. Characters like `<` and `>` should be escaped as entities (e.g., `<` for `<` and `>` for `>`).  

**Step 5:** If the issue persists, consider using a different embedded content processor in Trados, such as the Plain text embedded content processor.  

**Step 6:** If you are still encountering problems, you may want to define regex rules to process the content correctly.  

If you have already tried these steps and the issue remains unresolved, it may be beneficial to raise a support ticket with RWS, including any relevant files and a description of the differences observed.  

I hope this answer addressed your question. If not, please reject the answer, add the question improvement suggestion information, and click the RWS Community AI checkbox on the right to try again.  

RWS Community AI